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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., Cruickshank, S., Hammond-Pears, S., Shaw, D., Card, T., & 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)
Presentation / Conference Contribution
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)
Preprint / 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.