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Ethnicity and socio-economic status affects the incidence and survival of hepatosplenic T-cell lymphoma (2024)
Journal Article
Bishton, M. J., Crooks, C. J., Card, T. R., & West, J. (2024). Ethnicity and socio-economic status affects the incidence and survival of hepatosplenic T-cell lymphoma. British Journal of Haematology, https://doi.org/10.1111/bjh.19371

To address the lack of contemporary population-based epidemiological studies of hepatosplenic T-cell lymphoma (HSTCL), we undertook a population-based study of ICD-O-3-coded HSTCL in England. We used the National Cancer Registration Dataset and linke... Read More about Ethnicity and socio-economic status affects the incidence and survival of hepatosplenic T-cell lymphoma.

Smoking is a risk factor for autoimmune hepatitis: An English registry-based case-control study (2024)
Journal Article
Grønbæk, L., Omeife, H., Ban, L., Crooks, C. J., Card, T. R., Jepsen, P., & West, J. (2024). Smoking is a risk factor for autoimmune hepatitis: An English registry-based case-control study. Clinical Epidemiology, 16, 23-30. https://doi.org/10.2147/CLEP.S439219

Purpose: Smoking is a risk factor for some autoimmune diseases, but its association with autoimmune hepatitis remains unknown. We conducted a population-based matched case–control study to examine the association between tobacco smoking and the risk... Read More about Smoking is a risk factor for autoimmune hepatitis: An English registry-based case-control study.

Risk of alcohol-related liver disease in the offspring of parents with alcohol-related liver disease: A nationwide cohort study (2023)
Journal Article
Jepsen, P., West, J., Kann, A. E., Kraglund, F., Morling, J., Crooks, C., & Askgaard, G. (2023). Risk of alcohol-related liver disease in the offspring of parents with alcohol-related liver disease: A nationwide cohort study. Hepatology, https://doi.org/10.1097/hep.0000000000000747

Background and aims: Offspring of patients with alcohol-related liver disease (ALD) may have higher risk of ALD. We examined their risk of ALD and survival with ALD. Approach & Results: We used Danish nationwide registries to identify offspring of... Read More about Risk of alcohol-related liver disease in the offspring of parents with alcohol-related liver disease: A nationwide cohort study.

Outcomes after emergency appendicectomy in patients with liver cirrhosis: a population-based cohort study from England (2023)
Journal Article
Adiamah, A., Rashid, A., Crooks, C. J., Hammond, J. S., Jepsen, P., West, J., & Humes, D. J. (2023). Outcomes after emergency appendicectomy in patients with liver cirrhosis: a population-based cohort study from England. Langenbeck's Archives of Surgery, 408, Article 362. https://doi.org/10.1007/s00423-023-03072-3

Introduction The mortality risk after appendicectomy in patients with liver cirrhosis is predicted to be higher than in the general population given the associated risk of perioperative bleeding, infections and liver decompensation. This population-... Read More about Outcomes after emergency appendicectomy in patients with liver cirrhosis: a population-based cohort study from England.

Cause-specific mortality in patients with alcohol-related liver disease in Denmark: a population-based study (2023)
Journal Article
Kann, A. E., Jepsen, P., Madsen, L. G., West, J., & Askgaard, G. (2023). Cause-specific mortality in patients with alcohol-related liver disease in Denmark: a population-based study. Lancet Gastroenterology and Hepatology, 8(11), 1028-1034. https://doi.org/10.1016/S2468-1253%2823%2900192-9

Background Knowledge of the causes of death is essential to prevent premature death in alcohol-related liver disease (ALD). We examined cause-specific mortality, including death due to specific cancers, in 15 years after diagnosis of ALD. Methods... Read More about Cause-specific mortality in patients with alcohol-related liver disease in Denmark: a population-based study.

Understanding colorectal cancer risk for symptomatic patients in primary care: A cohort study utilising faecal immunochemical tests and blood results in England (2023)
Journal Article
Crooks, C. J., Banerjea, A., Jones, J., Chapman, C., Oliver, S., West, J., & Humes, D. J. (2023). Understanding colorectal cancer risk for symptomatic patients in primary care: A cohort study utilising faecal immunochemical tests and blood results in England. Alimentary Pharmacology and Therapeutics, 58(4), 443-452. https://doi.org/10.1111/apt.17632

Background: A faecal immunochemical tests (FIT) cut-off of ≥10 μg Hb/g faeces is now recommended in the UK as a gateway to urgent (suspected cancer) investigation for colorectal cancer (CRC), based on an expected CRC risk threshold of 3%. Aims: To qu... Read More about Understanding colorectal cancer risk for symptomatic patients in primary care: A cohort study utilising faecal immunochemical tests and blood results in England.

Respiratory rate responses to both hypercapnia and acidaemia are modified by age in patients with acidosis (2023)
Journal Article
Crooks, C. J., West, J., Morling, J. R., Simmonds, M., Juurlink, I., Briggs, S., …Fogarty, A. W. (2023). Respiratory rate responses to both hypercapnia and acidaemia are modified by age in patients with acidosis. Respiratory Physiology and Neurobiology, 315, Article 104098. https://doi.org/10.1016/j.resp.2023.104098

Objective To explore the associations between arterial pO2, pCO2 and pH and how these are modified by age. Methods An analysis of 2598 patients admitted with a diagnosis of Covid-19 infection to a large UK teaching hospital. Results There we... Read More about Respiratory rate responses to both hypercapnia and acidaemia are modified by age in patients with acidosis.

1-year survival in haemophagocytic lymphohistiocytosis: a nationwide cohort study from England 2003–2018 (2023)
Journal Article
West, J., Stilwell, P., Liu, H., Ban, L., Bythell, M., Card, T., …Crooks, C. (2023). 1-year survival in haemophagocytic lymphohistiocytosis: a nationwide cohort study from England 2003–2018. Journal of Hematology and Oncology, 16, Article 56. https://doi.org/10.1186/s13045-023-01434-4

Haemophagocytic lymphohistiocytosis (HLH) is a lethal syndrome of excessive immune activation. We undertook a nationwide study in England of all cases of HLH diagnosed between 2003 and 2018, using linked electronic health data from hospital admission... Read More about 1-year survival in haemophagocytic lymphohistiocytosis: a nationwide cohort study from England 2003–2018.

Anaemia of acute inflammation: a higher acute systemic inflammatory response is associated with a larger decrease in blood haemoglobin levels in patients with COVID-19 infection (2023)
Journal Article
Crooks, C. J., West, J., Morling, J. R., Simmonds, M., Juurlink, I., Briggs, S., …Fogarty, A. W. (2023). Anaemia of acute inflammation: a higher acute systemic inflammatory response is associated with a larger decrease in blood haemoglobin levels in patients with COVID-19 infection. Clinical Medicine, 23(3), 201-205. https://doi.org/10.7861/clinmed.2022-0436

AIMS: The study tests the hypothesis that a higher acute systemic inflammatory response was associated with a larger decrease in blood hemoglobin levels in patients with Coronavirus 2019 (COVID-19) infection. METHODS: All patients with either suspect... Read More about Anaemia of acute inflammation: a higher acute systemic inflammatory response is associated with a larger decrease in blood haemoglobin levels in patients with COVID-19 infection.

Effects of statins and aspirin on HCC risk in alcohol-related cirrhosis: nationwide emulated trials (2023)
Journal Article
Kraglund, F., Christensen, D. H., Eiset, A. H., Villadsen, G. E., West, J., & Jepsen, P. (2023). Effects of statins and aspirin on HCC risk in alcohol-related cirrhosis: nationwide emulated trials. Hepatology Communications, 7(1), Article e0013. https://doi.org/10.1097/HC9.0000000000000013

Background and Aims: Observational studies have shown an association between statin or aspirin use and a decreased risk of HCC, but the effects of a well-defined treatment strategy remain unknown. We emulated trials of the effects of continuous stati... Read More about Effects of statins and aspirin on HCC risk in alcohol-related cirrhosis: nationwide emulated trials.

Inverse association between blood pressure and pulse oximetry accuracy: an observational study in patients with suspected or confirmed COVID-19 infection (2022)
Journal Article
Crooks, C. J., West, J., Morling, J., Simmonds, M., Juurlink, I., Briggs, S., …Fogarty, A. W. (2023). Inverse association between blood pressure and pulse oximetry accuracy: an observational study in patients with suspected or confirmed COVID-19 infection. Emergency Medicine Journal, 40(3), 216-220. https://doi.org/10.1136/emermed-2022-212443

Background Pulse oximeters are a standard non-invasive tool to measure blood oxygen levels, and are used in multiple healthcare settings. It is important to understand the factors affecting their accuracy to be able to use them optimally and safely.... Read More about Inverse association between blood pressure and pulse oximetry accuracy: an observational study in patients with suspected or confirmed COVID-19 infection.

Temporal Trends in the Incidence of Hemophagocytic Lymphohistiocytosis: A Nationwide Cohort Study From England 2003–2018 (2022)
Journal Article
West, J., Stilwell, P., Liu, H., Ban, L., Bythell, M., Card, T. R., …Crooks, C. J. (2022). Temporal Trends in the Incidence of Hemophagocytic Lymphohistiocytosis: A Nationwide Cohort Study From England 2003–2018. HemaSphere, 6(11), Article e797. https://doi.org/10.1097/HS9.0000000000000797

Hemophagocytic lymphohistiocytosis (HLH) is rare, results in high mortality, and is increasingly being diagnosed. We aimed to quantify the incidence of diagnosed HLH and examine temporal trends in relation to age and associated diseases. Using nation... Read More about Temporal Trends in the Incidence of Hemophagocytic Lymphohistiocytosis: A Nationwide Cohort Study From England 2003–2018.

Haemphagocytic Lymphohistiocytosis in an English Nationwide Cohort Confirms Increasing Incidence and Variation in Trigger Factors (2022)
Journal Article
Bishton, M., Crooks, C., Liu, H., Ban, L., Bythell, M., Card, T., …West, J. (2022). Haemphagocytic Lymphohistiocytosis in an English Nationwide Cohort Confirms Increasing Incidence and Variation in Trigger Factors. Blood, 140(Supplement 1), 2599-2600. https://doi.org/10.1182/blood-2022-158999

Background: Haemophagocytic Lymphohistiocytosis (HLH) is a rare, life-threatening hyper-inflammatory syndrome triggered by constitutive and acquired risk factors including haematological malignancy, infection, auto-immunity and rheumatological diseas... Read More about Haemphagocytic Lymphohistiocytosis in an English Nationwide Cohort Confirms Increasing Incidence and Variation in Trigger Factors.

Social support and risk of mortality in cirrhosis: A cohort study (2022)
Journal Article
Askgaard, G., Madsen, L. G., von Wowern, N., Winther-Jensen, M., Lau, C. J., Christensen, A. I., …Jepsen, P. (2023). Social support and risk of mortality in cirrhosis: A cohort study. JHEP Reports, 5(1), Article 100600. https://doi.org/10.1016/j.jhepr.2022.100600

Background & Aims The function and structure of social relationships influence mortality in individuals within the general population. We compared aspects of social relationships in patients with cirrhosis and a matched comparison c... Read More about Social support and risk of mortality in cirrhosis: A cohort study.

Long-term adverse effects and healthcare burden of rectal cancer radiotherapy: systematic review and meta-analysis (2022)
Journal Article
Morton, A. J., Rashid, A., Shim, J. S., West, J., Humes, D. J., & Grainge, M. J. (2023). Long-term adverse effects and healthcare burden of rectal cancer radiotherapy: systematic review and meta-analysis. ANZ Journal of Surgery, 93(1-2), 42-53. https://doi.org/10.1111/ans.18059

Background: As rectal cancer survival increases, more patients survive with potentially severe, long-term gastrointestinal and genitourinary complications from radiotherapy. The burden of these complications for patients and healthcare services is un... Read More about Long-term adverse effects and healthcare burden of rectal cancer radiotherapy: systematic review and meta-analysis.

Liver blood marker testing in UK primary care: a UK wide cohort study, 2004-2016 (2022)
Journal Article
Scutt, P., Ban, L., Card, T., Crooks, C. J., Guha, N., West, J., & Morling, J. R. (2022). Liver blood marker testing in UK primary care: a UK wide cohort study, 2004-2016. BMJ Open, 12(9), e058967. https://doi.org/10.1136/bmjopen-2021-058967

OBJECTIVE: We aimed to determine (1) the temporal trends of liver enzyme testing in UK general practice and (2) how these vary among different subgroups at risk of chronic liver disease (CLD). DESIGN: Retrospective cohort study. SETTING: UK primary c... Read More about Liver blood marker testing in UK primary care: a UK wide cohort study, 2004-2016.

Incidence, prevalence and survival in patients with Langerhans cell histiocytosis: A national registry study from England, 2013–2019 (2022)
Journal Article
Liu, H., Stiller, C. A., Crooks, C. J., Rous, B., Bythell, M., Broggio, J., …West, J. (2022). Incidence, prevalence and survival in patients with Langerhans cell histiocytosis: A national registry study from England, 2013–2019. British Journal of Haematology, 199(5), 728-738. https://doi.org/10.1111/bjh.18459

This analysis is the largest population-based study to date to provide contemporary and comprehensive epidemiological estimates of all third edition of the International Classification of Diseases for Oncology (ICD-O-3) coded Langerhans cell histiocy... Read More about Incidence, prevalence and survival in patients with Langerhans cell histiocytosis: A national registry study from England, 2013–2019.

Differential pulse oximetry readings between ethnic groups and delayed transfer to intensive care units (2022)
Journal Article
Crooks, C. J., West, J., Morling, J. R., Simmonds, M., Juurlink, I., Briggs, S., …Fogarty, A. W. (2023). Differential pulse oximetry readings between ethnic groups and delayed transfer to intensive care units. QJM: An International Journal of Medicine, 116(1), 63-67. https://doi.org/10.1093/qjmed/hcac218

Summary Background Pulse oximeters are widely used to monitor blood oxygen saturations, although concerns exist that they are less accurate in individuals with pigmented skin. Aims This study aimed to determine if patients with pigmented skin were mo... Read More about Differential pulse oximetry readings between ethnic groups and delayed transfer to intensive care units.

Predicting Need for Escalation of Care or Death From Repeated Daily Clinical Observations and Laboratory Results in Patients With Severe Acute Respiratory Syndrome Coronavirus 2 (2022)
Journal Article
Crooks, C. J., West, J., Fogarty, A., Morling, J. R., Grainge, M. J., Gonem, S., …Card, T. R. (2022). Predicting Need for Escalation of Care or Death From Repeated Daily Clinical Observations and Laboratory Results in Patients With Severe Acute Respiratory Syndrome Coronavirus 2. American Journal of Epidemiology, 191(11), 1944-1953. https://doi.org/10.1093/aje/kwac126

We compared the performance of prognostic tools for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using parameters fitted either at the time of hospital admission or across all time points of an admission. This cohort study used clinic... Read More about Predicting Need for Escalation of Care or Death From Repeated Daily Clinical Observations and Laboratory Results in Patients With Severe Acute Respiratory Syndrome Coronavirus 2.

The Duration and Magnitude of Postdischarge Venous Thromboembolism Following Colectomy (2022)
Journal Article
Lewis-Lloyd, C. A., Humes, D. J., West, J., Peacock, O., & Crooks, C. J. (2022). The Duration and Magnitude of Postdischarge Venous Thromboembolism Following Colectomy. Annals of Surgery, 276(3), E177-E184. https://doi.org/10.1097/SLA.0000000000005563

Objective: To assess the impact of current guidelines by reporting weekly postoperative postdischarge venous thromboembolism (VTE) rates. Summary Background Data: Disparity exists between the postoperative thromboprophylaxis duration colectomy patien... Read More about The Duration and Magnitude of Postdischarge Venous Thromboembolism Following Colectomy.

Time Trends in the Incidence Rates of Venous Thromboembolism Following Colorectal Resection by Indication and Operative Technique (2022)
Journal Article
Lewis-Lloyd, C. A., Crooks, C. J., West, J., Peacock, O., & Humes, D. J. (2022). Time Trends in the Incidence Rates of Venous Thromboembolism Following Colorectal Resection by Indication and Operative Technique. Colorectal Disease, 24(11), 1405-1415. https://doi.org/10.1111/codi.16233

Aim It is important for patient safety to assess if international changes in perioperative care, such as focus on venous thromboembolism (VTE) prevention and minimally invasive surgery have reduced the high post colectomy VTE risks previously report... Read More about Time Trends in the Incidence Rates of Venous Thromboembolism Following Colorectal Resection by Indication and Operative Technique.

Age modifies both the maximal temperature and inflammatory response in patients with SARS-CoV-2 infection (2022)
Journal Article
Crooks, C. J., West, J., Morling, J. R., Simmonds, M., Juurlink, I., Briggs, S., …Fogarty, A. (2022). Age modifies both the maximal temperature and inflammatory response in patients with SARS-CoV-2 infection. Clinical Medicine, 22(3), 192-196. https://doi.org/10.7861/clinmed.2021-0603

Objective To determine the maximal response of the temperature and inflammatory response to SARS-CoV-2 infection and how these are modified by age. Methods Participants were patients admitted to hospital with SARS-CoV-2 infection. For each partici... Read More about Age modifies both the maximal temperature and inflammatory response in patients with SARS-CoV-2 infection.

Trends in indirect liver function marker testing in Wales from 2000 to 2017 and their association with age and sex: An observational study (2022)
Journal Article
Hill, T. A., Crooks, C. J., West, J., & Morling, J. R. (2022). Trends in indirect liver function marker testing in Wales from 2000 to 2017 and their association with age and sex: An observational study. BMJ Open Gastroenterology, 9(1), Article e000885. https://doi.org/10.1136/bmjgast-2022-000885

Objective If non-invasive markers of liver fibrosis were recorded frequently enough in clinical practice, it might be feasible to use them for opportunistic community screening for liver disease. We aimed to determine their current pattern of usage i... Read More about Trends in indirect liver function marker testing in Wales from 2000 to 2017 and their association with age and sex: An observational study.

Silent hypoxia is not an identifiable characteristic in patients with COVID-19 infection (2022)
Journal Article
Plummer, N. R., Fogarty, A., Shaw, D., Card, T., West, J., & Crooks, C. (2022). Silent hypoxia is not an identifiable characteristic in patients with COVID-19 infection. Respiratory Medicine, 197, Article 106858. https://doi.org/10.1016/j.rmed.2022.106858

Background: We aimed to assess whether asymptomatic (“happy”) hypoxia was an identifiable physiological phenotype of COVID-19 acute respiratory distress syndrome (ARDS), and associated with need for ICU admission. Methods: We performed an observation... Read More about Silent hypoxia is not an identifiable characteristic in patients with COVID-19 infection.

The risk of unexpected hospital admissions and primary care visits after an elective day-case gastroscopy: A cohort study within England (2022)
Journal Article
Crooks, C. J., Card, T. R., & West, J. (2022). The risk of unexpected hospital admissions and primary care visits after an elective day-case gastroscopy: A cohort study within England. Alimentary Pharmacology and Therapeutics, 56(1), 56-66. https://doi.org/10.1111/apt.16946

Aim: To determine the excess of acute medical contacts following a day-case diagnostic gastroscopy. Methods: Cohort study using English linked primary, secondary care and death registry electronic health data. We included 277,535 diagnostic day-case... Read More about The risk of unexpected hospital admissions and primary care visits after an elective day-case gastroscopy: A cohort study within England.

Temporal trends in the incidence of haemophagocytic lymphohistiocytosis: a nationwide cohort study from England 2003-2018 (2022)
Working Paper
West, J., Stilwell, P., Liu, H., Ban, L., Bythell, M., Card, T. R., …Crooks, C. J. Temporal trends in the incidence of haemophagocytic lymphohistiocytosis: a nationwide cohort study from England 2003-2018

Background Haemophagocytic lymphohistiocytosis (HLH) is rare, results in high mortality and is increasingly being diagnosed. Little is known about what is driving the apparent rise in the incidence of this disease. Methods Using national linked el... Read More about Temporal trends in the incidence of haemophagocytic lymphohistiocytosis: a nationwide cohort study from England 2003-2018.

Motivation to Reduce Drinking and Engagement in Alcohol Misuse Treatment in Alcohol-Related Liver Disease: A National Health Survey (2021)
Journal Article
Kann, A. E., Jepsen, P., Madsen, L., Crooks, C., Fleming, K., Christensen, A. I., …Askgaard, G. (2022). Motivation to Reduce Drinking and Engagement in Alcohol Misuse Treatment in Alcohol-Related Liver Disease: A National Health Survey. American Journal of Gastroenterology, 117(6), 918-922. https://doi.org/10.14309/ajg.0000000000001616

INTRODUCTION: The study aim was to identify predictors of motivation to reduce alcohol consumption and whether motivation predicts engagement in alcohol misuse treatment in alcohol-related liver disease (ALD). METHODS: Data from health surveys and he... Read More about Motivation to Reduce Drinking and Engagement in Alcohol Misuse Treatment in Alcohol-Related Liver Disease: A National Health Survey.

Incidence and survival of haemophagocytic lymphohistiocytosis: A population‐based cohort study from England (2021)
Journal Article
West, J., Card, T. R., Bishton, M. J., Lanyon, P., Ban, L., Bythell, M., …Crooks, C. J. (2022). Incidence and survival of haemophagocytic lymphohistiocytosis: A population‐based cohort study from England. Journal of Internal Medicine, 291(4), 493-504. https://doi.org/10.1111/joim.13432

Background: Haemophagocytic lymphohistiocytosis (HLH) is a rare hyper-inflammatory condition with poor outcomes. Objectives: Few population-based estimates of the incidence and survival in adults exist. We aimed to provide these data for England. Met... Read More about Incidence and survival of haemophagocytic lymphohistiocytosis: A population‐based cohort study from England.

Chest Radiograph Scoring Alone or Combined with Other Risk Scores for Predicting Outcomes in COVID-19 (2021)
Journal Article
Au-Yong, I., Higashi, Y., Giannotti, E., Fogarty, A., Morling, J. R., Grainge, M., …Card, T. (2022). Chest Radiograph Scoring Alone or Combined with Other Risk Scores for Predicting Outcomes in COVID-19. Radiology, 302(2), 460-469. https://doi.org/10.1148/radiol.2021210986

Background Radiographic severity may help predict patient deterioration and outcomes from COVID-19 pneumonia. Purpose To assess the reliability and reproducibility of three chest radiograph reporting systems (radiographic assessment of lung edema [RA... Read More about Chest Radiograph Scoring Alone or Combined with Other Risk Scores for Predicting Outcomes in COVID-19.

Characterizing the risk interplay between alcohol intake and body mass index on cirrhosis morbidity (2021)
Journal Article
Innes, H., Crooks, C. J., Aspinall, E., Card, T. R., Hamill, V., Dillon, J., …Morling, J. R. (2022). Characterizing the risk interplay between alcohol intake and body mass index on cirrhosis morbidity. Hepatology, 75(2), 369-378. https://doi.org/10.1002/hep.32123

Background and Aims: It is thought that alcohol intake and body mass index (BMI) interact supra-additively to modulate the risk of cirrhosis, but evidence for this phenomenon is limited. We investigated the interrelationship between alcohol and BMI o... Read More about Characterizing the risk interplay between alcohol intake and body mass index on cirrhosis morbidity.

A validation study of the identification of haemophagocytic lymphohistiocytosis in England using population-based health data (2021)
Journal Article
Bishton, M. J., Stilwell, P., Card, T. R., Lanyon, P., Ban, L., Elliss-Brookes, L., …Bythell, M. (2021). A validation study of the identification of haemophagocytic lymphohistiocytosis in England using population-based health data. British Journal of Haematology, 194(6), 1039-1044. https://doi.org/10.1111/bjh.17768

We assessed the validity of coded healthcare data to identify cases of haemophagocytic lymphohistiocytosis (HLH). Hospital Episode Statistics (HES) identified 127 cases within five hospital Trusts 2013–2018 using ICD-10 codes D76.1, D76.2 and D76.3.... Read More about A validation study of the identification of haemophagocytic lymphohistiocytosis in England using population-based health data.

Socioeconomic inequalities in the incidence of alcohol-related liver disease: A nationwide Danish study (2021)
Journal Article
Askgaard, G., Fleming, K. M., Crooks, C., Kraglund, F., Jensen, C. B., West, J., & Jepsen, P. (2021). Socioeconomic inequalities in the incidence of alcohol-related liver disease: A nationwide Danish study. Lancet Regional Health – Europe, 8, 1-9. https://doi.org/10.1016/j.lanepe.2021.100172

Background: There is socio-economic inequality in total alcohol-related harm, but knowledge of inequality in the incidence of specific alcohol-related diseases would be beneficial for prevention. Registry-based studies with nationwide coverage may re... Read More about Socioeconomic inequalities in the incidence of alcohol-related liver disease: A nationwide Danish study.

Risk and outcome of venous and arterial thrombosis in patients with cirrhosis: a Danish nationwide cohort study (2021)
Journal Article
Jepsen, P., Tapper, E. B., Deleuran, T., Kazankov, K., Askgaard, G., Toft Sørensen, H., …West, J. (2021). Risk and outcome of venous and arterial thrombosis in patients with cirrhosis: a Danish nationwide cohort study. Hepatology, 74(5), 2725-2734. https://doi.org/10.1002/hep.32019

Background & Aims Cirrhosis affects hemostasis, but its effects across the spectrum of thromboses remain poorly understood. We examined risks and outcomes of venous and arterial thrombosis. Approach & Results We used nationwide Danish health... Read More about Risk and outcome of venous and arterial thrombosis in patients with cirrhosis: a Danish nationwide cohort study.

External validation of a model to predict women most at risk of postpartum venous thromboembolism: Maternity clot risk (2021)
Journal Article
Ban, L., Abdul Sultan, A., West, J., Tata, L. J., Riley, R. D., Nelson-Piercy, C., & Grainge, M. J. (2021). External validation of a model to predict women most at risk of postpartum venous thromboembolism: Maternity clot risk. Thrombosis Research, 208, 202-210. https://doi.org/10.1016/j.thromres.2021.05.020

Introduction: Venous thromboembolism (VTE) is the leading cause of direct maternal mortality in high-income countries. We previously developed a risk prediction score for postpartum venous thromboembolism (VTE) in women without a previous VTE. In thi... Read More about External validation of a model to predict women most at risk of postpartum venous thromboembolism: Maternity clot risk.

A validation study of the identification of haemophagocytic lymphohistiocytosis in England using population-based health data (2021)
Working Paper
Bishton, M., Stilwell, P., Card, T. R., Lanyon, P., Ban, L., Elliss-Brookes, L., …Bythell, M. A validation study of the identification of haemophagocytic lymphohistiocytosis in England using population-based health data

We assessed the validity of coded health care data to identify cases of haemophagocytic lymphohistiocytosis (HLH). Hospital Episode Statistics (HES) identified 127 cases within five hospital Trusts 2013-2018 using ICD-10 codes D76.1, D76.2 and D76.3.... Read More about A validation study of the identification of haemophagocytic lymphohistiocytosis in England using population-based health data.

Outcomes after non-operative management of perforated diverticular disease: a population-based cohort study (2021)
Journal Article
Adiamah, A., Ban, L., Otete, H., Crooks, C. J., West, J., & Humes, D. J. (2021). Outcomes after non-operative management of perforated diverticular disease: a population-based cohort study. BJS Open, 5(2), https://doi.org/10.1093/bjsopen/zraa073

BACKGROUND: The management of perforated diverticular disease has changed in the past 10 years with a move towards less surgical intervention. This population-based cohort study aimed to define the risk of death and readmission following non-operativ... Read More about Outcomes after non-operative management of perforated diverticular disease: a population-based cohort study.

We need stronger evidence for (or against) hepatocellular carcinoma surveillance (2021)
Journal Article
Jepsen, P., & West, J. (2021). We need stronger evidence for (or against) hepatocellular carcinoma surveillance. Journal of Hepatology, 74(5), 1234-1239. https://doi.org/10.1016/j.jhep.2020.12.029

Current guidelines from EASL recommend that most patients with cirrhosis are offered surveillance for hepatocellular carcinoma (HCC), but fewer than expected patients actually receive it. The recommendation is based on observational studies and simul... Read More about We need stronger evidence for (or against) hepatocellular carcinoma surveillance.

Long term health related quality of life following colorectal cancer surgery: patient reported outcomes in a remote follow-up population (2020)
Journal Article
Malcolm, F., Adiamah, A., Banerjea, A., Whitehead, D., Gupta, A., West, J., & Humes, D. (2021). Long term health related quality of life following colorectal cancer surgery: patient reported outcomes in a remote follow-up population. Colorectal Disease, 23(1), 213-225. https://doi.org/10.1111/codi.15393

Background: Remote follow-up (RFU) after colorectal cancer (CRC) surgery allows delivery of surveillance tests without the need for regular outpatient clinical appointments. However, little is known about health related quality of life (HRQoL) in RFU... Read More about Long term health related quality of life following colorectal cancer surgery: patient reported outcomes in a remote follow-up population.

COVID-19-associated hyperinflammation and escalation of patient care: a retrospective longitudinal cohort study (2020)
Journal Article
Manson, J. J., Crooks, C., Naja, M., Ledlie, A., Goulden, B., Liddle, T., …Tattersall, R. (2020). COVID-19-associated hyperinflammation and escalation of patient care: a retrospective longitudinal cohort study. The Lancet Rheumatology, 2(10), e594-e602. https://doi.org/10.1016/S2665-9913%2820%2930275-7

Background: A subset of patients with severe COVID-19 develop a hyperinflammatory syndrome, which might contribute to morbidity and mortality. This study explores a specific phenotype of COVID-19-associated hyperinflammation (COV-HI), and its associa... Read More about COVID-19-associated hyperinflammation and escalation of patient care: a retrospective longitudinal cohort study.

Health related quality of life in individuals at high risk of chronic liver disease: Impact of a community diagnostic pathway (2020)
Journal Article
Tildesley, Z., Chalmers, J., Harris, R., West, J., Guha, I. N., & Morling, J. R. (2020). Health related quality of life in individuals at high risk of chronic liver disease: Impact of a community diagnostic pathway. Public Health In Practice, 1, https://doi.org/10.1016/j.puhip.2020.100033

Objectives: There is a lack of understanding of health related quality of life (HRQoL) in chronic liver disease (CLD). With the rising prevalence of alcohol and obesity driven CLD, and the increasing ability to screen for fibrosis, it is important to... Read More about Health related quality of life in individuals at high risk of chronic liver disease: Impact of a community diagnostic pathway.

Mortality after extrahepatic gastrointestinal and abdominal wall surgery in patients with alcoholic liver disease: A systematic review and meta-analysis (2020)
Journal Article
Adiamah, A., Ban, L., Hammond, J., Jepsen, P., West, J., & Humes, D. .. (2020). Mortality after extrahepatic gastrointestinal and abdominal wall surgery in patients with alcoholic liver disease: A systematic review and meta-analysis. Alcohol and Alcoholism, 55(5), 497–511. https://doi.org/10.1093/alcalc/agaa043

Aims: This meta-analysis aimed to define the perioperative risk of mortality in patients with alcoholic liver disease (ALD) undergoing extrahepatic gastrointestinal surgery. Methods: Systematic searches of Embase, Medline and CENTRAL were undertak... Read More about Mortality after extrahepatic gastrointestinal and abdominal wall surgery in patients with alcoholic liver disease: A systematic review and meta-analysis.

Risk of hepatocellular carcinoma in Danish outpatients with alcohol-related cirrhosis (2020)
Journal Article
Jepsen, P., Kraglund, F., West, J., Villadsen, G. E., Toft Sørensen, H., & Vilstrup, H. (2020). Risk of hepatocellular carcinoma in Danish outpatients with alcohol-related cirrhosis. Journal of Hepatology, 73(5), 1030-1036. https://doi.org/10.1016/j.jhep.2020.05.043

Background and aims: Accurate estimates of the risk of hepatocellular carcinoma (HCC) in patients with cirrhosis are important for clinical decisions about HCC surveillance. We described HCC risk among outpatients with alcoholic cirrhosis and contras... Read More about Risk of hepatocellular carcinoma in Danish outpatients with alcohol-related cirrhosis.

Incidence, prevalence and mortality of autoimmune hepatitis in England 1997-2015. A population-based cohort study (2020)
Journal Article
Grønbæk, L., Otete, H., Ban, L., Crooks, C., Card, T., Jepsen, P., & West, J. (2020). Incidence, prevalence and mortality of autoimmune hepatitis in England 1997-2015. A population-based cohort study. Liver International, 40(7), 1634-1644. https://doi.org/10.1111/liv.14480

© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd Background & Aims: There are few population-based studies of the incidence and mortality of autoimmune hepatitis. The burden of the disease and how it has changed over time have not... Read More about Incidence, prevalence and mortality of autoimmune hepatitis in England 1997-2015. A population-based cohort study.

Changes in the testing for and incidence of celiac disease in the UK 2005-2015: a population based cohort study (2019)
Journal Article
West, J., Otete, H., Sultan, A. A., & Crooks, C. J. (2019). Changes in the testing for and incidence of celiac disease in the UK 2005-2015: a population based cohort study. Epidemiology, 30(4), e23-e24. https://doi.org/10.1097/EDE.0000000000001006

The diagnosis rates of coeliac disease differ substantially between countries. Intriguingly, there has been recent evidence from Olmstead County, USA and Finland that in the last 5-10 years incidence has plateaued or even declined. In most population... Read More about Changes in the testing for and incidence of celiac disease in the UK 2005-2015: a population based cohort study.

Duration and Magnitude of Postoperative Risk of Venous Thromboembolism after Cholecystectomy: A Population-Based Cohort Study (2019)
Journal Article
Henry, M., Abdul-Sultan, A., Walker, A., West, J., & Humes, D. (2019). Duration and Magnitude of Postoperative Risk of Venous Thromboembolism after Cholecystectomy: A Population-Based Cohort Study. Digestive Surgery, 37(1), 32-38. https://doi.org/10.1159/000496435

Background: This study aimed to identify burden and risk of VTE associated with cholecystectomy in England. Methods: An historical cohort study of cholecystectomy patients from 2001-2011 was undertaken using linked primary (Clinical Practice... Read More about Duration and Magnitude of Postoperative Risk of Venous Thromboembolism after Cholecystectomy: A Population-Based Cohort Study.

Healthcare utilisation, morbidities and alcohol use monitoring prior to alcoholic psychosis diagnosis (2018)
Journal Article
Otete, H., Fleming, K. M., West, J., & Orton, E. (2019). Healthcare utilisation, morbidities and alcohol use monitoring prior to alcoholic psychosis diagnosis. Alcohol and Alcoholism, 54(2), 131–138. https://doi.org/10.1093/alcalc/agy085

Aims: This study aimed to describe healthcare utilisation, morbidities and monitoring of alcohol use in patients prior to a diagnosis of alcoholic psychosis in order to inform the early identification of patients at risk. Method: Using linked gene... Read More about Healthcare utilisation, morbidities and alcohol use monitoring prior to alcoholic psychosis diagnosis.

Mortality in people with coeliac disease: long-term follow-up from a Scottish cohort (2018)
Journal Article
Quarpong, W., Card, T. R., West, J., Solaymani-Dodaran, M., Logan, R. F., & Grainge, M. J. (2019). Mortality in people with coeliac disease: long-term follow-up from a Scottish cohort. United European Gastroenterology Journal, 7(3), 377-387. https://doi.org/10.1177/2050640618814662

Background: Few studies have determined the very long-term mortality risks in adult and childhood-diagnosed coeliac disease. Objective: We quantified mortality risks in coeliac disease and determined whether age at diagnosis, or time following di... Read More about Mortality in people with coeliac disease: long-term follow-up from a Scottish cohort.

Changing autonomy in operative experience through UK general surgery training: a national cohort study (2018)
Journal Article
Elsey, E. J., Griffiths, G., West, J., & Humes, D. J. (2019). Changing autonomy in operative experience through UK general surgery training: a national cohort study. Annals of Surgery, 269(3), 399-406. https://doi.org/10.1097/sla.0000000000003032

Objectives:To determine the operative experience of UK general surgery trainees and assess the changing procedural supervision and acquisition of competency assessments through the course of training. Background Summary Data: Competency assessment... Read More about Changing autonomy in operative experience through UK general surgery training: a national cohort study.

Time out of general surgery specialty training in the UK: a national database study (2018)
Journal Article
Elsey, E. J., West, J., Griffiths, G., & Humes, D. J. (2019). Time out of general surgery specialty training in the UK: a national database study. Journal of Surgical Education, 76(1), 55-64. https://doi.org/10.1016/j.jsurg.2018.06.011

Objective General surgery specialty training in the United Kingdom takes 6 years and allows trainees to take time out of training. Studies from the United States have highlighted an increasing trend for taking time out of surgical training for res... Read More about Time out of general surgery specialty training in the UK: a national database study.

Injury among children and young people with and without attention deficit-hyperactivity disorder in the community: the risk of fractures, thermal injuries and poisonings (2018)
Journal Article
Prasad, V., West, J., Sayal, K., & Kendrick, D. (2018). Injury among children and young people with and without attention deficit-hyperactivity disorder in the community: the risk of fractures, thermal injuries and poisonings. Child: Care, Health and Development, 44(6), 871-878. https://doi.org/10.1111/cch.12591

Background: Injuries commonly cause morbidity and mortality in children and young people (CYP). Attention deficit-hyperactivity disorder (ADHD) is the commonest neurobehavioural disorder in CYP and is associated with increased injury risk. However, l... Read More about Injury among children and young people with and without attention deficit-hyperactivity disorder in the community: the risk of fractures, thermal injuries and poisonings.

Hip fracture risk in patients with alcoholic cirrhosis: a population-based study using English and Danish data (2018)
Journal Article
Otete, H. E., Deleuran, T., Fleming, K. M., Card, T. R., Aithal, G. P., Jepsen, P., & West, J. (2018). Hip fracture risk in patients with alcoholic cirrhosis: a population-based study using English and Danish data. Journal of Hepatology, 69(3), 697-704. https://doi.org/10.1016/j.jhep.2018.04.002

© 2018 European Association for the Study of the Liver Background & Aims: Cirrhosis, the prevalence of which is increasing, is a risk factor for osteoporosis and fractures. However, little is known of the actual risk of hip fractures in patients with... Read More about Hip fracture risk in patients with alcoholic cirrhosis: a population-based study using English and Danish data.

Attention-deficit/hyperactivity disorder: variation by socio-economic deprivation (2018)
Journal Article
Prasad, V., West, J., Kendrick, D., & Sayal, K. (2019). Attention-deficit/hyperactivity disorder: variation by socio-economic deprivation. Archives of Disease in Childhood, 104(8), 802-805. https://doi.org/10.1136/archdischild-2017-314470

Background: In England, there is a discrepancy between the prevalence of Attention-deficit/hyperactivity disorder (ADHD) ascertained from medical records and community surveys. There is also a lack of data on variation in recorded prevalence by depri... Read More about Attention-deficit/hyperactivity disorder: variation by socio-economic deprivation.

A validation study of the CirCom comorbidity score in an English cirrhosis population using the Clinical Practice Research Datalink (2018)
Journal Article
Crooks, C. J., West, J., & Jepson, P. (2018). A validation study of the CirCom comorbidity score in an English cirrhosis population using the Clinical Practice Research Datalink. Clinical Epidemiology, 2018:10, https://doi.org/10.2147/CLEP.S147535

Purpose: The CirCom score has been developed from Danish data as a specific measure of comorbidity for cirrhosis to predict all-cause mortality. We compared its performance with the Charlson Comorbidity Index (CCI) in an English cirrhosis population.... Read More about A validation study of the CirCom comorbidity score in an English cirrhosis population using the Clinical Practice Research Datalink.

Duration and magnitude of postoperative risk of venous thromboembolism after planned inguinal hernia repair in men: a population-based cohort study (2018)
Journal Article
Humes, D., Abdul-Sultan, A., Walker, A. J., Ludvigsson, J. F., & West, J. (in press). Duration and magnitude of postoperative risk of venous thromboembolism after planned inguinal hernia repair in men: a population-based cohort study. Hernia, https://doi.org/10.1007/s10029-017-1716-6

Purpose Little is known regarding the magnitude and timing of the risk of VTE following inguinal hernia surgery. We aimed to determine the absolute and relative rates of venous thromboembolism (VTE) following planned inguinal hernia repair. Methods... Read More about Duration and magnitude of postoperative risk of venous thromboembolism after planned inguinal hernia repair in men: a population-based cohort study.

Liver cirrhosis in England--an observational study: are we measuring its burden occurrence correctly? (2017)
Journal Article
Ratib, S., West, J., & Fleming, K. M. (2017). Liver cirrhosis in England--an observational study: are we measuring its burden occurrence correctly?. BMJ Open, 7(7), Article e013752. https://doi.org/10.1136/bmjopen-2016-013752

Objectives: Mortality due to liver disease (of which cirrhosis is the end‐stage) is increasing more than any other chronic condition in the UK. This study aims to demonstrate that (i) exclusive reliance on mortality rates may not reveal the true burd... Read More about Liver cirrhosis in England--an observational study: are we measuring its burden occurrence correctly?.

Mineral status in canine medial coronoid process disease: a cohort study using analysis of hair by mass spectrometry (2017)
Journal Article
Davies, M., West, J., Williams, C., & Gardner, D. S. (in press). Mineral status in canine medial coronoid process disease: a cohort study using analysis of hair by mass spectrometry. Veterinary Record, 180(18), https://doi.org/10.1136/vr.103953

In several species, developmental skeletal diseases involving abnormal endochondral ossification have been associated with imbalanced mineral intake. Hair analysis reflects long-term mineral status. To determine the mineral content of hair from dogs... Read More about Mineral status in canine medial coronoid process disease: a cohort study using analysis of hair by mass spectrometry.

Risk of hepatocellular carcinoma among individuals with different aetiologies of cirrhosis: a population-based cohort study (2017)
Journal Article
West, J., Card, T. R., Aithal, G. P., & Fleming, K. M. (2017). Risk of hepatocellular carcinoma among individuals with different aetiologies of cirrhosis: a population-based cohort study. Alimentary Pharmacology and Therapeutics, 45(7), 983-990. https://doi.org/10.1111/apt.13961

Background: Among patients with cirrhosis, only those determined to be at risk for hepatocellular carcinoma (HCC) should undergo surveillance. However, little is known about how different aetiologies of cirrhosis affect risk for HCC. Aim: To quantif... Read More about Risk of hepatocellular carcinoma among individuals with different aetiologies of cirrhosis: a population-based cohort study.

Meta-analysis of operative experiences of general surgery trainees during training (2016)
Journal Article
Elsey, E., Griffiths, G., Humes, D., & West, J. (in press). Meta-analysis of operative experiences of general surgery trainees during training. British Journal of Surgery, 104(1), https://doi.org/10.1002/bjs.10396

BACKGROUND: General surgical training curricula around the world set defined operative numbers to be achieved before completion of training. However, there are few studies reporting total operative experience in training. This systematic review aimed... Read More about Meta-analysis of operative experiences of general surgery trainees during training.

Development and validation of risk prediction model for venous thromboembolism in postpartum women: multinational cohort study (2016)
Journal Article
Sultan, A. A., West, J., Grainge, M. J., Riley, R. D., Tata, L. J., Stephansson, O., …Ludvigsson, J. F. (2016). Development and validation of risk prediction model for venous thromboembolism in postpartum women: multinational cohort study. BMJ, 355(i6253), https://doi.org/10.1136/bmj.i6253

Objective: To develop and validate a risk prediction model for venous thromboembolism in the first six weeks after delivery (early postpartum). Design: Cohort study. Setting: Records from England based Clinical Practice Research Datalink (CPRD)... Read More about Development and validation of risk prediction model for venous thromboembolism in postpartum women: multinational cohort study.

The use of a bayesian hierarchy to develop and validate a co-morbidity score to predict mortality for linked primary and secondary care data from the NHS in England (2016)
Journal Article
Crooks, C. J., Card, T. R., & West, J. (2016). The use of a bayesian hierarchy to develop and validate a co-morbidity score to predict mortality for linked primary and secondary care data from the NHS in England. PLoS ONE, 11(10), 1-16. https://doi.org/10.1371/journal.pone.0165507

Background: We have assessed whether the linkage between routine primary and secondary care records provided an opportunity to develop an improved population based co-morbidity score with the combined information on co-morbidities from both health ca... Read More about The use of a bayesian hierarchy to develop and validate a co-morbidity score to predict mortality for linked primary and secondary care data from the NHS in England.

Adverse pregnancy outcomes among women with inflammatory bowel disease: a population based study from England (2016)
Journal Article
Abdul Sultan, A., West, J., Ban, L., Humes, D., Tata, L. J., Fleming, K. M., …Card, T. R. (2016). Adverse pregnancy outcomes among women with inflammatory bowel disease: a population based study from England. Inflammatory Bowel Diseases, 22(7), 1621-1630. https://doi.org/10.1097/MIB.0000000000000802

Background: There is limited contemporary population based evidence on adverse birth outcomes and pregnancy related complications for women with inflammatory bowel disease (IBD). This study provides such estimates of these risks and assesses variatio... Read More about Adverse pregnancy outcomes among women with inflammatory bowel disease: a population based study from England.

The risk of community-acquired pneumonia among 9803 patients with coeliac disease compared to the general population: a cohort study (2016)
Journal Article
Zingone, F., Abdul Sultan, A., Crooks, C. J., Tata, L. J., Ciacci, C., & West, J. (in press). The risk of community-acquired pneumonia among 9803 patients with coeliac disease compared to the general population: a cohort study. Alimentary Pharmacology and Therapeutics, 44(1), https://doi.org/10.1111/apt.13652

Background: Patients with coeliac disease are considered as individuals for whom pneumococcal vaccination is advocated. Aim: To quantify the risk of community-acquired pneumonia among patients with coeliac disease, assessing whether vaccination ag... Read More about The risk of community-acquired pneumonia among 9803 patients with coeliac disease compared to the general population: a cohort study.

Risk of symptomatic venous thromboembolism following emergency appendicectomy in adults (2016)
Journal Article
Humes, D., Walker, A. J., Hunt, B., Sultan, A. A., Ludvigsson, J. F., & West, J. (2016). Risk of symptomatic venous thromboembolism following emergency appendicectomy in adults. British Journal of Surgery, 103(4), 443-450. https://doi.org/10.1002/bjs.10091

BACKGROUND: Appendicectomy is the commonest intra-abdominal emergency surgical procedure, and little is known regarding the magnitude and timing of the risk of venous thromboembolism (VTE) after surgery. This study aimed to determine absolute and rel... Read More about Risk of symptomatic venous thromboembolism following emergency appendicectomy in adults.

Alcohol-attributable healthcare attendances up to 10 years prior to diagnosis of alcoholic cirrhosis: a population based case-control study (2015)
Journal Article
Otete, H. E., Orton, E., Fleming, K. M., & West, J. (2016). Alcohol-attributable healthcare attendances up to 10 years prior to diagnosis of alcoholic cirrhosis: a population based case-control study. Liver International, 36(4), 538-546. https://doi.org/10.1111/liv.13002

BACKGROUND & AIMS: Cirrhosis because of alcohol could be avoided if drinking behaviour could be altered earlier in the disease course. Our aim was to quantify the burden of morbidities in patients prior to alcoholic cirrhosis diagnosis, as this may... Read More about Alcohol-attributable healthcare attendances up to 10 years prior to diagnosis of alcoholic cirrhosis: a population based case-control study.

When are breast cancer patients at highest risk of venous thromboembolism? A cohort study using English healthcare data (2015)
Journal Article
Walker, A. J., West, J., Card, T. R., Crooks, C. J., Kirwan, C. C., & Grainge, M. J. (2015). When are breast cancer patients at highest risk of venous thromboembolism? A cohort study using English healthcare data. Blood, 127(7), 849-857. https://doi.org/10.1182/blood-2015-01-625582

Breast cancer patients are at increased risk of VTE, particularly in the peri-diagnosis period. However, no previous epidemiological studies have investigated the relative impact of breast cancer treatments in a time-dependent manner. We aimed to det... Read More about When are breast cancer patients at highest risk of venous thromboembolism? A cohort study using English healthcare data.

Defining venous thromboembolism and measuring its incidence using Swedish health registries: a nationwide pregnancy cohort study (2015)
Journal Article
Abdul Sultan, A., West, J., Stephansson, O., Grainge, M. J., Tata, L. J., Fleming, K. M., …Ludvigsson, J. F. (2015). Defining venous thromboembolism and measuring its incidence using Swedish health registries: a nationwide pregnancy cohort study. BMJ Open, 5(11), Article e008864. https://doi.org/10.1136/bmjopen-2015-008864

Objective: To accurately define venous thromboembolism (VTE) in the routinely collected Swedish health registers and quantify its incidence in and around pregnancy. Study design: Cohort study using data from the Swedish Medical Birth Registry (MBR)... Read More about Defining venous thromboembolism and measuring its incidence using Swedish health registries: a nationwide pregnancy cohort study.

Calculating total health service utilisation and costs from routinely collected electronic health records using the example of patients with irritable bowel syndrome before and after their first gastroenterology appointment (2015)
Journal Article
Canavan, C., West, J., & Card, T. R. (in press). Calculating total health service utilisation and costs from routinely collected electronic health records using the example of patients with irritable bowel syndrome before and after their first gastroenterology appointment. PharmacoEconomics, 34(2), https://doi.org/10.1007/s40273-015-0339-y

INTRODUCTION: Health economic models are increasingly important in funding decisions but most are based on data, which may therefore not represent the general population. We sought to establish the potential of real-world data available within the Cl... Read More about Calculating total health service utilisation and costs from routinely collected electronic health records using the example of patients with irritable bowel syndrome before and after their first gastroenterology appointment.

Change in quality of life for patients with irritable bowel syndrome following referral to a gastroenterologist: a cohort study (2015)
Journal Article
Canavan, C., West, J., & Card, T. R. (2015). Change in quality of life for patients with irritable bowel syndrome following referral to a gastroenterologist: a cohort study. PLoS ONE, 10(10), Article e0139389. https://doi.org/10.1371/journal.pone.0139389

BACKGROUND: Irritable bowel syndrome (IBS), a chronic functional condition, considerably reduces quality of life (QoL) and referral to gastroenterology is common. Until now, however, the impact of seeing a gastroenterologist for IBS on patients’ QoL... Read More about Change in quality of life for patients with irritable bowel syndrome following referral to a gastroenterologist: a cohort study.

Sex and age differences in the early identification and treatment of alcohol use: a population-based study of patients with alcoholic cirrhosis (2015)
Journal Article
Otete, H. E., Orton, E., West, J., & Fleming, K. M. (2015). Sex and age differences in the early identification and treatment of alcohol use: a population-based study of patients with alcoholic cirrhosis. Addiction, 110(12), https://doi.org/10.1111/add.13081

Aim: To estimate sex differences in health-care utilization among harmful/hazardous drinkers in the period before alcoholic cirrhosis diagnosis, and estimate sex differences in the extent to which alcohol use and brief alcohol interventions were docu... Read More about Sex and age differences in the early identification and treatment of alcohol use: a population-based study of patients with alcoholic cirrhosis.

Variation in the risk of venous thromboembolism following colectomy (2015)
Journal Article
Humes, D., Walker, A., Blackwell, J., Hunt, B., & West, J. (2015). Variation in the risk of venous thromboembolism following colectomy. British Journal of Surgery, 102(13), https://doi.org/10.1002/bjs.9923

Background: Guidelines recommend extended thromboprophylaxis following colectomy for malignant disease, but not for non-malignant disease. The aim of this study was to determine absolute and relative rates of venous thromboembolism (VTE) following co... Read More about Variation in the risk of venous thromboembolism following colectomy.

Causes of death in people with liver cirrhosis in England compared to the general population: a population-based cohort study (2015)
Journal Article
Ratib, S., Fleming, K. M., Crooks, C. J., Walker, A. J., & West, J. (2015). Causes of death in people with liver cirrhosis in England compared to the general population: a population-based cohort study. American Journal of Gastroenterology, 110, https://doi.org/10.1038/ajg.2015.191

Introduction Liver cirrhosis is increasing worldwide and associated with high mortality. Precise estimates of cause-specific mortality compared to the general population, by underlying aetiology, are lacking. Such information may demonstrate areas w... Read More about Causes of death in people with liver cirrhosis in England compared to the general population: a population-based cohort study.

Causes of death in people with coeliac disease in England compared with the general population: a competing risk analysis (2015)
Journal Article
Abdul Sultan, A., Crooks, C. J., Card, T. R., Tata, L. J., Fleming, K. M., & West, J. (2015). Causes of death in people with coeliac disease in England compared with the general population: a competing risk analysis. Gut, 64(8), https://doi.org/10.1136/gutjnl-2014-308285

INTRODUCTION: Quantifying excess cause-specific mortality among people with coeliac disease (CD) compared with the general population accounting for competing risks will allow accurate information to be given on risk of death from specific causes.... Read More about Causes of death in people with coeliac disease in England compared with the general population: a competing risk analysis.

A comparison of the recording of comorbidity in primary and secondary care by using the Charlson Index to predict short-term and long-term survival in a routine linked data cohort (2015)
Journal Article
Crooks, C. J., West, J., & Card, T. R. (2015). A comparison of the recording of comorbidity in primary and secondary care by using the Charlson Index to predict short-term and long-term survival in a routine linked data cohort. BMJ Open, 5(6), Article e007974. https://doi.org/10.1136/bmjopen-2015-007974

OBJECTIVE: Hospital admission records provide snapshots of clinical histories for a subset of the population admitted to hospital. In contrast, primary care records provide continuous clinical histories for complete populations, but might lack detail... Read More about A comparison of the recording of comorbidity in primary and secondary care by using the Charlson Index to predict short-term and long-term survival in a routine linked data cohort.

Risk of venous thromboembolism in children after general surgery (2015)
Journal Article
Humes, D. J., Nordenskjöld, A., Walker, A. J., West, J., & Ludvigsson, J. F. (in press). Risk of venous thromboembolism in children after general surgery. Journal of Pediatric Surgery, 50(11), https://doi.org/10.1016/j.jpedsurg.2015.05.010

Background/purpose: The purpose of the study was to determine absolute and relative rates of venous thromboembolism (VTE) following general surgical procedures in children compared to the general population. Methods: We analyzed data from all pat... Read More about Risk of venous thromboembolism in children after general surgery.

Socioeconomic variation in the incidence of childhood coeliac disease in the UK (2015)
Journal Article
Zingone, F., West, J., Crooks, C. J., Fleming, K. M., Card, T. R., Ciacci,, C., & Tata, L. J. (2015). Socioeconomic variation in the incidence of childhood coeliac disease in the UK. Archives of Disease in Childhood, 100(5), https://doi.org/10.1136/archdischild-2014-307105

BACKGROUND: Serological studies indicate that evidence of coeliac disease (CD) exists in about 1% of all children, but we lack estimates of current diagnostic patterns among children and how they vary by socioeconomic group. METHODS: We identifie... Read More about Socioeconomic variation in the incidence of childhood coeliac disease in the UK.

Incidence and distribution of coeliac disease in Campania (Italy): 2011–2013 (2015)
Journal Article
Zingone, F., West, J., Auricchio, R., Maria Bevilacqua, R., Bile, G., Borgheresi, P., …Ciacci, C. (2015). Incidence and distribution of coeliac disease in Campania (Italy): 2011–2013. United European Gastroenterology Journal, 3(2), https://doi.org/10.1177/2050640615571021

BACKGROUND: There exists a wide variation in the reported incidence of coeliac disease in recent decades. We aimed to evaluate the incidence rate of coeliac diagnoses performed in an Italian region, Campania, between 2011 and 2013 and its variation t... Read More about Incidence and distribution of coeliac disease in Campania (Italy): 2011–2013.

Risk of acute appendicitis in and around pregnancy: a population-based cohort study from England (2015)
Journal Article
Zingone, F., Sultan, A. A., Humes, D., & West, J. (2015). Risk of acute appendicitis in and around pregnancy: a population-based cohort study from England. Annals of Surgery, 261(2), https://doi.org/10.1097/sla.0000000000000780

Objective: To determine the absolute and relative risk of acute appendicitis during the antepartum and postpartum periods compared with the time outside pregnancy among women of childbearing age. Background: Acute appendicitis is the most common... Read More about Risk of acute appendicitis in and around pregnancy: a population-based cohort study from England.

Persistence of health inequalities in childhood injury in the UK: a population-based cohort study of children under 5 (2014)
Journal Article
Orton, E., Kendrick, D., West, J., & Tata, L. J. (2014). Persistence of health inequalities in childhood injury in the UK: a population-based cohort study of children under 5. PLoS ONE, 9(10), Article e111631. https://doi.org/10.1371/journal.pone.0111631

BACKGROUND: Injury is a significant cause of childhood death and can result in substantial long-term disability. Injuries are more common in children from socio-economically deprived families, contributing to health inequalities between the most and... Read More about Persistence of health inequalities in childhood injury in the UK: a population-based cohort study of children under 5.

Limited risks of major congenital anomalies in children of mothers with coeliac disease: a population-based cohort study (2014)
Journal Article
Ban, L., West, J., Abdul Sultan, A., Dhalwani, N. N., Ludvigsson, J. F., & Tata, L. J. (in press). Limited risks of major congenital anomalies in children of mothers with coeliac disease: a population-based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology, 122(13), https://doi.org/10.1111/1471-0528.13102

Objective: To examine major congenital anomaly (CA) risks in children of mothers with coeliac disease (CD) compared with mothers without CD. Design: Population-based cohort study. Setting: Linked maternal–child medical records from a large pr... Read More about Limited risks of major congenital anomalies in children of mothers with coeliac disease: a population-based cohort study.

The incidence of other gastroenterological disease following diagnosis of irritable bowel syndrome in the UK: a cohort study (2014)
Journal Article
Canavan, C., Card, T. R., & West, J. (2014). The incidence of other gastroenterological disease following diagnosis of irritable bowel syndrome in the UK: a cohort study. PLoS ONE, 9(9), Article e106478. https://doi.org/10.1371/journal.pone.0106478

BACKGROUND: Guidelines recommend Irritable Bowel Syndrome (IBS) diagnosis and management in primary care with minimal investigations; however little evidence exists regarding risk of organic gastrointestinal conditions following diagnosis of IBS and... Read More about The incidence of other gastroenterological disease following diagnosis of irritable bowel syndrome in the UK: a cohort study.

Review article: the economic impact of the irritable bowel syndrome (2014)
Journal Article
Canavan, C., West, J., & Card, T. R. (in press). Review article: the economic impact of the irritable bowel syndrome. Alimentary Pharmacology and Therapeutics, 40(9), https://doi.org/10.1111/apt.12938

Background: Irritable bowel syndrome (IBS) is a chronic functional disorder of the gastrointestinal system affecting a large number of people worldwide. Whilst it has no attributable mortality, it has substantial impact on patients' quality of life (... Read More about Review article: the economic impact of the irritable bowel syndrome.

Impact of risk factors on the timing of first postpartum venous thromboembolism: a population-based cohort study from England (2014)
Journal Article
Abdul Sultan, A., Grainge, M. J., West, J., Fleming, K. M., Nelson-Piercy, C., & Tata, L. J. (in press). Impact of risk factors on the timing of first postpartum venous thromboembolism: a population-based cohort study from England. Blood, 124(18), https://doi.org/10.1182/blood-2014-05-572834

For women with preeclampsia, BMI >30 kg/m2, infection, or those having cesarean delivery, VTE risk remained elevated for 6 weeks postpartum.For women with postpartum hemorrhage or preterm birth, the relative rate of VTE was only increased for the... Read More about Impact of risk factors on the timing of first postpartum venous thromboembolism: a population-based cohort study from England.

Women with celiac disease present with fertility problems no more often than women in the general population (2014)
Journal Article
Dhalwani, N. N., West, J., Sultan, A. A., Ban, L., & Tata, L. J. (in press). Women with celiac disease present with fertility problems no more often than women in the general population. Gastroenterology, 147(6), Article 1267-1274.e1. https://doi.org/10.1053/j.gastro.2014.08.025

BACKGROUND & AIMS: Studies have associated infertility with celiac disease. However, these included small numbers of women attending infertility specialist services and subsequently screened for celiac disease, and therefore may not have been represe... Read More about Women with celiac disease present with fertility problems no more often than women in the general population.

Pregnancy complications and adverse birth outcomes among women with celiac disease: a population-based study from England (2014)
Journal Article
Abdul Sultan, A., Tata, L. J., Fleming, K. M., Crooks, C. J., Ludvigsson, J. F., Dhalwani, N. N., …West, J. (in press). Pregnancy complications and adverse birth outcomes among women with celiac disease: a population-based study from England. American Journal of Gastroenterology, 109(10), https://doi.org/10.1038/ajg.2014.196

OBJECTIVES: Evidence-based information about adverse birth outcomes and pregnancy complications is crucial when counseling women with celiac disease (CD); however, limited population-based data on such risks exist. We estimated these for pregnant wom... Read More about Pregnancy complications and adverse birth outcomes among women with celiac disease: a population-based study from England.

First trimester exposure to anxiolytic and hypnotic drugs and the risks of major congenital anomalies: a United Kingdom population-based cohort study (2014)
Journal Article
Ban, L., West, J., Gibson, J. E., Fiaschi, L., Sokal, R., Doyle, P., …Tata, L. J. (2014). First trimester exposure to anxiolytic and hypnotic drugs and the risks of major congenital anomalies: a United Kingdom population-based cohort study. PLoS ONE, 9(6), Article e100996. https://doi.org/10.1371/journal.pone.0100996

BACKGROUND: Despite their widespread use the effects of taking benzodiazepines and non-benzodiazepine hypnotics during pregnancy on the risk of major congenital anomaly (MCA) are uncertain. The objectives were to estimate absolute and relative risks... Read More about First trimester exposure to anxiolytic and hypnotic drugs and the risks of major congenital anomalies: a United Kingdom population-based cohort study.

Injury among children and young adults with epilepsy (2014)
Journal Article
Prasad, V., Kendrick, D., Sayal, K., Thomas, S. L., & West, J. (in press). Injury among children and young adults with epilepsy. Pediatrics, 133(5), https://doi.org/10.1542/peds.2013-2554

OBJECTIVE: To investigate whether children and young adults with epilepsy are at a greater risk of fracture, thermal injury, or poisoning than those without. METHODS: A cohort study was conducted by using the Clinical Practice Research Datalink (198... Read More about Injury among children and young adults with epilepsy.

Incidence and prevalence of celiac disease and dermatitis herpetiformis in the UK over two decades: population-based study (2014)
Journal Article
West, J., Fleming, K. M., Tata, L. J., Card, T. R., & Crooks, C. J. (2014). Incidence and prevalence of celiac disease and dermatitis herpetiformis in the UK over two decades: population-based study. American Journal of Gastroenterology, 109(5), 757-768. https://doi.org/10.1038/ajg.2014.55

OBJECTIVES: Few studies have quantified the incidence and prevalence of celiac disease (CD) and dermatitis herpetiformis (DH) nationally and regionally by time and age groups. Understanding this epidemiology is crucial for hypothesizing about causes... Read More about Incidence and prevalence of celiac disease and dermatitis herpetiformis in the UK over two decades: population-based study.

Maternal depression, antidepressant prescriptions, and congenital anomaly risk in offspring: a population-based cohort study (2014)
Journal Article
Ban, L., Gibson, J. E., West, J., Fiaschi, L., Sokal, R., Smeeth, L., …Tata, L. J. (in press). Maternal depression, antidepressant prescriptions, and congenital anomaly risk in offspring: a population-based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology, 121(12), https://doi.org/10.1111/1471-0528.12682

OBJECTIVE: To estimate risks of major congenital anomaly (MCA) among children of mothers prescribed antidepressants during early pregnancy or diagnosed with depression but without antidepressant prescriptions. DESIGN: Population-based cohort study.... Read More about Maternal depression, antidepressant prescriptions, and congenital anomaly risk in offspring: a population-based cohort study.

Venous thromboembolism in children with cancer – a population-based cohort study (2014)
Journal Article
Walker, A. J., Grainge, M. J., Card, T. R., West, J., Ranta, S., & Ludvigsson, J. F. (2014). Venous thromboembolism in children with cancer – a population-based cohort study. Thrombosis Research, 133(3), https://doi.org/10.1016/j.thromres.2013.12.021

Introduction: Cancer is a known risk factor for venous thromboembolism (VTE) in adults, but population-based data in children are scarce. Materials and methods: We conducted a cohort study utilising linkage of the Clinical Practice Research Datab... Read More about Venous thromboembolism in children with cancer – a population-based cohort study.

Variation in the risk of venous thromboembolism in people with colorectal cancer: a population-based cohort study from England (2014)
Journal Article
Walker, A., West, J., Card, T. R., Humes, D., & Grainge, M. J. (2014). Variation in the risk of venous thromboembolism in people with colorectal cancer: a population-based cohort study from England. Journal of Thrombosis and Haemostasis, 12(5), https://doi.org/10.1111/jth.12533

BACKGROUND: Patients with colorectal cancer are at high risk of developing venous thromboembolism (VTE), and recent international guidelines have advised extended prophylaxis for some of these patients following surgery or during chemotherapy. Howeve... Read More about Variation in the risk of venous thromboembolism in people with colorectal cancer: a population-based cohort study from England.

The epidemiology of irritable bowel syndrome (2014)
Journal Article
Canavan, C., West, J., & Card, T. R. (2014). The epidemiology of irritable bowel syndrome. Clinical Epidemiology, 6, https://doi.org/10.2147/CLEP.S40245

Irritable bowel syndrome (IBS) is a functional condition of the bowel that is diagnosed using clinical criteria. This paper discusses the nature of the diagnostic process for IBS and how this impacts epidemiological measurements. Depending on the dia... Read More about The epidemiology of irritable bowel syndrome.

1 and 5 year survival estimates for people with cirrhosis of the liver in England, 1998–2009: a large population study (2014)
Journal Article
Ratib, S., Fleming, K. M., Crooks, C. J., Aithal, G. P., & West, J. (2014). 1 and 5 year survival estimates for people with cirrhosis of the liver in England, 1998–2009: a large population study. Journal of Hepatology, 60(2), https://doi.org/10.1016/j.jhep.2013.09.027

BACKGROUND & AIMS: Large, population-based studies that have included the full spectrum of cirrhosis estimating survival, taking into account time-at-risk are lacking. We aimed to report 1- and 5-year average survival rates for people with cirrhosis... Read More about 1 and 5 year survival estimates for people with cirrhosis of the liver in England, 1998–2009: a large population study.

Occurrence of liver cirrhosis in England, a cohort study, 1998-2009: a comparison with cancer (2014)
Journal Article
Ratib, S., West, J., Crooks, C. J., & Fleming, K. M. (2014). Occurrence of liver cirrhosis in England, a cohort study, 1998-2009: a comparison with cancer. American Journal of Gastroenterology, 109(2), https://doi.org/10.1038/ajg.2013.405

OBJECTIVES: There is no routine registration of the occurrence of newly diagnosed cases of cirrhosis in the United Kingdom. This study seeks to determine precise estimates and trends of the incidence of cirrhosis in England, and directly compare the... Read More about Occurrence of liver cirrhosis in England, a cohort study, 1998-2009: a comparison with cancer.

How to read a cohort study (2014)
Book Chapter
Tata, L. J. (2014). How to read a cohort study. In N. J. Talley, G. Richard Locke III, P. Moayyedi, J. West, & Y. A. Saito (Eds.), GI Epidemiology: Diseases and Clinical Methodology (15-29). (Second). John Wiley & Sons, Ltd. https://doi.org/10.1002/9781118727072.ch2

The cohort is the basis of all epidemiologic study designs as it is the closest way to study the natural progression of people's life course over which the temporal relationship between exposures and outcomes can be assessed. Although a cohort is def... Read More about How to read a cohort study.

Risk of first venous thromboembolism in pregnant women in hospital: population based cohort study from England (2013)
Journal Article
Sultan, A. A., West, J., Tata, L. J., Fleming, K. M., Nelson-Piercy, C., & Grainge, M. J. (2013). Risk of first venous thromboembolism in pregnant women in hospital: population based cohort study from England. BMJ, 347(7935), Article 11. https://doi.org/10.1136/bmj.f6099

Objective: To examine the potential for preventing venous thromboembolism during and after antepartum hospital admissions in pregnant women. Design: Cohort study using linked primary (Clinical Practice Research Datalink) and secondary (Hospital E... Read More about Risk of first venous thromboembolism in pregnant women in hospital: population based cohort study from England.

The incidence of first venous thromboembolism in and around pregnancy using linked primary and secondary care data: a population based cohort study from England and comparative meta-analysis (2013)
Journal Article
Sultan, A. A., Tata, L. J., Grainge, M. J., & West, J. (2013). The incidence of first venous thromboembolism in and around pregnancy using linked primary and secondary care data: a population based cohort study from England and comparative meta-analysis. PLoS ONE, 8(7), Article e70310. https://doi.org/10.1371/journal.pone.0070310

Background: Recent linkage between primary and secondary care data has provided valuable information for studying heath outcomes that may initially present in different health care settings. The aim of this study was therefore, twofold: to use linke... Read More about The incidence of first venous thromboembolism in and around pregnancy using linked primary and secondary care data: a population based cohort study from England and comparative meta-analysis.

Comorbidities affect risk of nonvariceal upper gastrointestinal bleeding (2013)
Journal Article
Crooks, C. J., West, J., & Card, T. R. (2013). Comorbidities affect risk of nonvariceal upper gastrointestinal bleeding. Gastroenterology, 144(7), Article 1384-1393.e2. https://doi.org/10.1053/j.gastro.2013.02.040

Background & Aims The incidence of upper gastrointestinal bleeding (GIB) has not been reduced despite the decreasing incidence of peptic ulcers, strategies to eradicate Helicobacter pylori infection, and prophylaxis against ulceration from nonsteroi... Read More about Comorbidities affect risk of nonvariceal upper gastrointestinal bleeding.

The communication of a secondary care diagnosis of autoimmune hepatitis to primary care practitioners: a population-based study (2013)
Journal Article
Varyani, F., Card, T. R., Kaye, P., Aithal, G. P., & West, J. (2013). The communication of a secondary care diagnosis of autoimmune hepatitis to primary care practitioners: a population-based study. BMC Health Services Research, 13(161), Article 161. https://doi.org/10.1186/1472-6963-13-161

Background Autoimmune Hepatitis is a chronic liver disease which affects young people and can result in liver failure leading to death or transplantation yet there is a lack of information on the incidence and prevalence of this disease and its natu... Read More about The communication of a secondary care diagnosis of autoimmune hepatitis to primary care practitioners: a population-based study.

Excess long-term mortality following non-variceal upper gastrointestinal bleeding: a population-based cohort study (2013)
Journal Article
Crooks, C. J., Card, T. R., & West, J. (2013). Excess long-term mortality following non-variceal upper gastrointestinal bleeding: a population-based cohort study. PLoS Medicine, 10(4), Article e1001437. https://doi.org/10.1371/journal.pmed.1001437

Background It is unclear whether an upper gastrointestinal bleed is an isolated gastrointestinal event or an indicator of a deterioration in a patient's overall health status. Therefore, we investigated the excess causes of death in individuals afte... Read More about Excess long-term mortality following non-variceal upper gastrointestinal bleeding: a population-based cohort study.

Risk of venous thromboembolism in patients with cancer: a systematic review and meta-analysis (2012)
Journal Article
Horsted, F., West, J., & Grainge, M. J. (2012). Risk of venous thromboembolism in patients with cancer: a systematic review and meta-analysis. PLoS Medicine, 9(7), Article e1001275. https://doi.org/10.1371/journal.pmed.1001275

Background: People with cancer are known to be at increased risk of venous thromboembolism (VTE), and this risk is believed to vary according to cancer type, stage of disease, and treatment modality. Our purpose was to summarise the existing literatu... Read More about Risk of venous thromboembolism in patients with cancer: a systematic review and meta-analysis.

Independent risk factors for injury in pre-school children: three population-based nested case-control studies using routine primary care data (2012)
Journal Article
Orton, E., Kendrick, D., West, J., & Tata, L. J. (2012). Independent risk factors for injury in pre-school children: three population-based nested case-control studies using routine primary care data. PLoS ONE, 7(4), Article e35193. https://doi.org/10.1371/journal.pone.0035193

Background: Injuries in childhood are largely preventable yet an estimated 2,400 children die every day because of injury and violence. Despite this, the factors that contribute to injury occurrence have not been quantified at the population scale us... Read More about Independent risk factors for injury in pre-school children: three population-based nested case-control studies using routine primary care data.

All-cause mortality in people with cirrhosis compared with the general population: a population-based cohort study (2011)
Journal Article
Fleming, K. M., Aithal, G. P., Card, T. R., & West, J. (2012). All-cause mortality in people with cirrhosis compared with the general population: a population-based cohort study. Liver International, 32(1), https://doi.org/10.1111/j.1478-3231.2011.02517.x

Background: Mortality due to cirrhosis has tripled over the last 30 years in the UK. However, we lack adequate, contemporary, population-based estimates of the excess mortality patients who are at risk compared with the general population. Aim: To d... Read More about All-cause mortality in people with cirrhosis compared with the general population: a population-based cohort study.