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The effect of diabetes mellitus on perioperative outcomes following colorectal resections: a national cohort study (2024)
Journal Article
Gysling, S., Lewis-Lloyd, C. A., Lobo, D. N., Crooks, C. J., & Humes, D. J. (in press). The effect of diabetes mellitus on perioperative outcomes following colorectal resections: a national cohort study. British Journal of Anaesthesia,

Background: Diabetes mellitus is a significant modulator of postoperative outcomes and is an important risk factor in the patient selection process. We aimed to investigate the effect of diabetes mellitus and use of insulin on outcomes following colo... Read More about The effect of diabetes mellitus on perioperative outcomes following colorectal resections: a national cohort study.

A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes: a pilot study (2024)
Journal Article
Ng, C., Dellschaft, N. S., Hoad, C., Marciani, L., Spiller, R., Crooks, C., …Smyth, A. R. (2024). A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes: a pilot study. NIHR Open Research, 3, Article 65. https://doi.org/10.3310/nihropenres.13510.2

Background People with cystic fibrosis (CF) can experience recurrent chest infections, pancreatic exocrine insufficiency and gastrointestinal symptoms. New cystic fibrosis transmembrane conductance regulator (CFTR) modulator drugs improve lung funct... Read More about A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes: a pilot study.

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.

A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes. (2023)
Journal Article
Ng, C., Dellschaft, N. S., Hoad, C., Marciani, L., Spiller, R., Crooks, C., …Smyth, A. R. (2023). A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes. NIHR Open Research, 3(65), 1-16. https://doi.org/10.3310/nihropenres.13510.1

Background People with cystic fibrosis (CF) can experience recurrent chest infections, pancreatic exocrine insufficiency and gastrointestinal symptoms. New cystic fibrosis transmembrane conductance regulator (CFTR) modulator drugs improve lung fun... Read More about A randomised crossover trial of tezacaftor-ivacaftor for gut dysfunction in cystic fibrosis with magnetic resonance imaging (MRI) outcomes..

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.

Incidence, risk factors and outcomes of checkpoint inhibitor-induced liver injury: A 10-year real-world retrospective cohort study (2023)
Journal Article
Atallah, E., Welsh, S. J., O'Carrigan, B., Oshaughnessy, A., Dolapo, I., Kerr, A. S., …Aithal, G. P. (2023). Incidence, risk factors and outcomes of checkpoint inhibitor-induced liver injury: A 10-year real-world retrospective cohort study. JHEP Reports, 5(10), Article 100851. https://doi.org/10.1016/j.jhepr.2023.100851

Background & Aims: Checkpoint inhibitors (CPI) account for increasing numbers of drug-induced liver injury (DILI) cases. We aimed to determine the incidence rate and risk factors associated with checkpoint inhibitor-induced liver injury (ChILI). Meth... Read More about Incidence, risk factors and outcomes of checkpoint inhibitor-induced liver injury: A 10-year real-world retrospective cohort 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.

Venous thromboembolism following colectomy for diverticular disease: an English population-based cohort study (2023)
Journal Article
Yapa, A. K. D. S., Humes, D. J., Crooks, C. . J., & Lewis-Lloyd, C. A. (2023). Venous thromboembolism following colectomy for diverticular disease: an English population-based cohort study. Langenbeck's Archives of Surgery, 408, Article 203. https://doi.org/10.1007/s00423-023-02920-6

Aim This study reports venous thromboembolism (VTE) rates following colectomy for diverticular disease to explore the magnitude of postoperative VTE risk in this population and identify high risk subgroups of interest. Method English national c... Read More about Venous thromboembolism following colectomy for diverticular disease: an English population-based cohort study.

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.

Risk of liver fibrosis associated with long-term methotrexate therapy may be overestimated (2023)
Journal Article
Atallah, E., Grove, J., Crooks, C., Burden-Teh, E., Abhishek, A., Moreea, S., …Aithal, G. (2023). Risk of liver fibrosis associated with long-term methotrexate therapy may be overestimated. Journal of Hepatology, 78(5), 989-997. https://doi.org/10.1016/j.jhep.2022.12.034

Background & Aims The risk of significant liver fibrosis from prolonged methotrexate (MTX) exposure has been estimated at around 5%, prompting intensive monitoring strategies. However, the evidence is derived from retrospective studies that under-re... Read More about Risk of liver fibrosis associated with long-term methotrexate therapy may be overestimated.

Risk of liver fibrosis associated with long-term methotrexate therapy may be overestimated (2023)
Journal Article
Atallah, E., Grove, J. I., Crooks, C., Burden-Teh, E., Abhishek, A., Moreea, S., …Aithal, G. P. (2023). Risk of liver fibrosis associated with long-term methotrexate therapy may be overestimated. Journal of Hepatology, 78(5), 989-997. https://doi.org/10.1016/j.jhep.2022.12.034

Background & Aims: The risk of significant liver fibrosis from prolonged methotrexate (MTX) exposure has been estimated at around 5%, prompting intensive monitoring strategies. However, the evidence is derived from retrospective studies that under-re... Read More about Risk of liver fibrosis associated with long-term methotrexate therapy may be overestimated.

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.

Helicobacter pylori eradication for primary prevention of peptic ulcer bleeding in older patients prescribed aspirin in primary care (HEAT): a randomised, double-blind, placebo-controlled trial (2022)
Journal Article
Hawkey, C., Avery, A., Coupland, C. A., Crooks, C., Dumbleton, J., Hobbs, F. D. R., …Hodgson, S. (2022). Helicobacter pylori eradication for primary prevention of peptic ulcer bleeding in older patients prescribed aspirin in primary care (HEAT): a randomised, double-blind, placebo-controlled trial. Lancet, 400(10363), 1597-1606. https://doi.org/10.1016/S0140-6736%2822%2901843-8

Background: Peptic ulcers in patients receiving aspirin are associated with Helicobacter pylori infection. We aimed to investigate whether H pylori eradication would protect against aspirin-associated ulcer bleeding. Methods: We conducted a randomise... Read More about Helicobacter pylori eradication for primary prevention of peptic ulcer bleeding in older patients prescribed aspirin in primary care (HEAT): a randomised, double-blind, placebo-controlled trial.

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.

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.

Prognostic non-invasive biomarkers for all-cause mortality in non-alcoholic fatty liver disease: A systematic review and meta-analysis (2022)
Journal Article
Cianci, N., Subhani, M., Hill, T., Khanna, A., Zheng, D., Sheth, A., …Aithal, G. P. (2022). Prognostic non-invasive biomarkers for all-cause mortality in non-alcoholic fatty liver disease: A systematic review and meta-analysis. World Journal of Hepatology, 14(5), 1025-1037. https://doi.org/10.4254/wjh.v14.i5.1025

BACKGROUND Non-alcoholic fatty liver disease (NAFLD) represents a growing public health concern, with patients having higher risk of morbidity and mortality. It has a considerably high prevalence in the general population, estimated 20%-40% in Europe... Read More about Prognostic non-invasive biomarkers for all-cause mortality in non-alcoholic fatty liver disease: A systematic review and meta-analysis.

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.

Impact of COVID-19 pandemic on prevalence of Clostridioides difficile infection in a UK tertiary centre (2021)
Journal Article
Voona, S., Abdic, H., Montgomery, R., Clarkson, A., Twitchell, H., Hills, T., …Monaghan, T. M. (2022). Impact of COVID-19 pandemic on prevalence of Clostridioides difficile infection in a UK tertiary centre. Anaerobe, 73, Article 102479. https://doi.org/10.1016/j.anaerobe.2021.102479

Serious concerns have been raised about a possible increase in cases of Clostridioides difficile infection (CDI) during the COVID-19 pandemic. We conducted a retrospective observational single centre study which revealed that total combined community... Read More about Impact of COVID-19 pandemic on prevalence of Clostridioides difficile infection in a UK tertiary centre.

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.

Planned surgery in the COVID-19 pandemic: a prospective cohort study from Nottingham (2021)
Journal Article
Catton, J., Banerjea, A., Gregory, S., Hall, C., Crooks, C., Lewis-Lloyd, C., …Humes, D. (2021). Planned surgery in the COVID-19 pandemic: a prospective cohort study from Nottingham. Langenbeck's Archives of Surgery, 406, 2469-2477. https://doi.org/10.1007/s00423-021-02207-8

Purpose Globally planned surgical procedures have been deferred during the current COVID-19 pandemic. The study aimed to report the outcomes of planned urgent and cancer cases during the current pandemic using a multi-disciplinary prioritisation gro... Read More about Planned surgery in the COVID-19 pandemic: a prospective cohort study from Nottingham.

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.

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.

Supervised Bayesian statistical learning to identify prognostic risk factor patterns from population data (2020)
Book Chapter
Crooks, C. J. (2020). Supervised Bayesian statistical learning to identify prognostic risk factor patterns from population data. In L. B. Pape-Haugaard, C. Lovis, I. Cort Madsen, P. Weber, P. Hostrup Nielsen, & P. Scott (Eds.), Digital personalized health and medicine: Proceedings of MIE 2020 (422-426). IOS Press. https://doi.org/10.3233/SHTI200195

Current methods for building risk models assume averaged uniform effects across populations. They use weighted sums of individual risk factors from regression models with only a few interactions, such as age. This does not allow risk factor effects t... Read More about Supervised Bayesian statistical learning to identify prognostic risk factor patterns from population data.

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.

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.

The risk of Clostridium difficile infection in patients with pernicious anaemia: a retrospective cohort study using primary care database. (2017)
Journal Article
Othman, F., Crooks, C. J., & Card, T. R. (in press). The risk of Clostridium difficile infection in patients with pernicious anaemia: a retrospective cohort study using primary care database. United European Gastroenterology Journal, https://doi.org/10.1177/2050640617695697

Background: Studies have found an association between proton pump inhibitor (PPI) use and Clostridium difficile infection. The purpose of this study was to determine whether the mechanism by which PPIs induce an increased risk of C. difficile infecti... Read More about The risk of Clostridium difficile infection in patients with pernicious anaemia: a retrospective cohort study using primary care database..

Community acquired pneumonia incidence before and after proton pump inhibitor prescription: population based study (2016)
Journal Article
Othman, F., Crooks, C. J., & Card, T. R. (2016). Community acquired pneumonia incidence before and after proton pump inhibitor prescription: population based study. BMJ, 355, Article i5813. https://doi.org/10.1136/bmj.i5813

Objective To examine the risk of community acquired pneumonia before and after prescription of proton pump inhibitor (PPI) and assess whether unmeasured confounding explains this association. Design Cohort study and self controlled case series. S... Read More about Community acquired pneumonia incidence before and after proton pump inhibitor prescription: population based 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.

Proton pump inhibitor prescribing patterns in the UK: a primary care database study (2016)
Journal Article
Othman, F., Card, T. R., & Crooks, C. J. (2016). Proton pump inhibitor prescribing patterns in the UK: a primary care database study. Pharmacoepidemiology and Drug Safety, 25(9), 1079-1087. https://doi.org/10.1002/pds.4043

Purpose: To determine the prevalence and pattern of proton pump inhibitor (PPI) prescription and the practices employed to reduce PPI use in the UK general population. Methods: The UK's Clinical Practice Research Database was used to identify indi... Read More about Proton pump inhibitor prescribing patterns in the UK: a primary care database study.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.