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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.

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.

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.

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.

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.

Incidence and pattern of mycophenolate discontinuation associated with abnormal monitoring blood-test results: cohort study using data from the Clinical Practice Research Datalink Aurum (2022)
Journal Article
Nakafero, G., Grainge, M. J., Card, T., Mallen, C. D., Riley, R., Van Der Windt, D., …Abhishek, A. (2022). Incidence and pattern of mycophenolate discontinuation associated with abnormal monitoring blood-test results: cohort study using data from the Clinical Practice Research Datalink Aurum. Rheumatology Advances in Practice, 6(2), Article rkac046. https://doi.org/10.1093/rap/rkac046

Objective: The aim was to examine the incidence and pattern of MMF discontinuation associated with abnormal monitoring blood-test results. Methods: Data from people prescribed MMF for common inflammatory conditions in the Clinical Practice Research D... Read More about Incidence and pattern of mycophenolate discontinuation associated with abnormal monitoring blood-test results: cohort study using data from the Clinical Practice Research Datalink Aurum.

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.

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.

Development and validation of a prognostic model for leflunomide discontinuation with abnormal blood tests during long-term treatment: cohort study using data from the Clinical Practice Research Datalink Gold and Aurum (2021)
Journal Article
Nakafero, G., Grainge, M. J., Card, T., Taal, M. W., Aithal, G. P., Zhang, W., …Abhishek, A. (2022). Development and validation of a prognostic model for leflunomide discontinuation with abnormal blood tests during long-term treatment: cohort study using data from the Clinical Practice Research Datalink Gold and Aurum. Rheumatology, 61(7), 2783-2791. https://doi.org/10.1093/rheumatology/keab790

OBJECTIVE: To develop and validate a prognostic model for LEF discontinuation with abnormal blood test results. METHODS: Data from the Clinical Practice Research Datalink Gold and Aurum were used for model development and external validation, respect... Read More about Development and validation of a prognostic model for leflunomide discontinuation with abnormal blood tests during long-term treatment: cohort study using data from the Clinical Practice Research Datalink Gold and Aurum.

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.

What is the incidence of methotrexate or leflunomide discontinuation related to cytopenia, liver enzyme elevation or kidney function decline? (2021)
Journal Article
Nakafero, G., Grainge, M. J., Card, T., Mallen, C. D., Zhang, W., Doherty, M., …Abhishek, A. (2021). What is the incidence of methotrexate or leflunomide discontinuation related to cytopenia, liver enzyme elevation or kidney function decline?. Rheumatology, 60(12), 5785-5794. https://doi.org/10.1093/rheumatology/keab254

Objectives: To examine incidence of treatment changes due to abnormal blood-test results and, to explore rates of treatment changes due to liver, kidney and haematological blood-test abnormalities in autoimmune rheumatic diseases (AIRD) treated with... Read More about What is the incidence of methotrexate or leflunomide discontinuation related to cytopenia, liver enzyme elevation or kidney function decline?.

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.