Publications by authors named "Alex Walker"

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OpenSAFELY: Effectiveness of COVID-19 Vaccination in Children and Adolescents.
Colm D Andrews, Edward P K Parker, Elsie Horne, Venexia Walker, Tom Palmer, Alex J Walker

Epidemiology· January 2026

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Patient characteristics associated with clinically coded long COVID: an OpenSAFELY study using electronic health records.
Yinghui Wei, Elsie Mf Horne, Rochelle Knight, Genevieve Cezard, Alex J Walker, Venexia Walker

BJGP Open· December 2025

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A Multidisciplinary Survey Comparing Academic and Community Critical Care Clinicians' Acute Respiratory Distress Syndrome Practice and the COVID-19 Pandemic.
Diane Masket, Carey C Thomson, Andre Carlos Kajdacsy-Balla Amaral, Catherine L Hough, Nicholas J Johnson, Alex Walker

Ann Am Thorac Soc· November 2025

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Dashboard Intervention for Tracking Digital Social Media Activity in the Clinical Care of Individuals With Mood and Anxiety Disorders: Randomized Trial.
Leslie Miller, Tenzin C Lhaksampa, Alex Walker, Carlos Aguirre, Matthew DeCamp

JMIR Ment Health· November 2025

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Long-term kidney outcomes after COVID-19: a matched cohort study using the OpenSAFELY platform.
Viyaasan Mahalingasivam, Bang Zheng, Kevin Wing, Edward P K Parker, Krishnan Bhaskaran, Alex J Walker

Lancet Reg Health Eur· August 2025

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Variation in duration of repeat prescriptions: a primary care cohort study in England.
Brian MacKenna, Andrew D Brown, Richard Croker, Alex J Walker, Ben Goldacre

Br J Gen Pract· July 2025

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Effect of the 2022 COVID-19 booster vaccination campaign in people aged 50 years in England: Regression discontinuity analysis in OpenSAFELY-TPP.
Andrea L Schaffer, William J Hulme, Elsie Horne, Edward P K Parker, Venexia Walker, Alex J Walker

Vaccine· June 2025

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Impact of the COVID-19 pandemic on antidepressant prescribing with a focus on people with learning disability and autism: an interrupted time series analysis in England using OpenSAFELY-TPP.
Christine Cunningham, Orla Macdonald, Andrea Schaffer, Andrew Brown, Milan Wiedemann, Alex Walker

BMJ Ment Health· April 2025

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IL-1 receptor antagonist anakinra downregulates inflammatory cytokines during renal normothermic machine perfusion: Preliminary results.
Sarah A Hosgood, Tom Moore, Alex Walker, Michael L Nicholson

Artif Organs· March 2025

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Testing a Dashboard Intervention for Tracking Digital Social Media Activity in Clinical Care of Individuals With Mood and Anxiety Disorders: Protocol and Design Considerations for a Pragmatic Randomized Trial.
Brittany Nesbitt, Danielle Virgadamo, Carlos Aguirre, Matthew DeCamp, Mark Dredze, Alex Walker

JMIR Res Protoc· March 2025

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Vitamin B prescribing from 2015 to 2024 in English general practice: an observational study to investigate the switch from injections to tablets.
Nikita Tank, Christopher Wood, Anand Ahankari, Brian Mackenna, Alex Walker

BMJ Open· February 2025

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Educational interventions delivered to prescribing advisers to influence primary care prescribing: a very low-cost pragmatic randomised trial using routine data from OpenPrescribing.net.
Helen J Curtis, Brian MacKenna, Bhavana Reddy, Alex J Walker, Sebastian Bacon

BMC Health Serv Res· February 2025

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Study protocol: Comparison of different risk prediction modelling approaches for COVID-19 related death using the OpenSAFELY platform.

Wellcome Open Res· December 2024

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COVID-19 and Mental Illnesses in Vaccinated and Unvaccinated People.
Venexia M Walker, Praveetha Patalay, Jose Ignacio Cuitun Coronado, Rachel Denholm, Harriet Forbes, Alex Walker

JAMA Psychiatry· November 2024

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Digital Technologies Tracking Active and Passive Data Collection in Depressive Disorders: Lessons Learned From a Case Series.
Manuel Gardea-Resendez, Scott Breitinger, Alex Walker, Laura Harper, Ashley Xiong

J Psychiatr Pract· November 2024

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Using Data to Improve Healthcare: A Case Study of Pancreatic Enzyme Replacement in Pancreatic Cancer.
Teena S Varghese, Colm Andrews, Louis Fisher, Ben Goldacre, Amir Mehrkar, Alex J Walker

Semin Oncol Nurs· October 2024

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Incidence of diabetes after SARS-CoV-2 infection in England and the implications of COVID-19 vaccination: a retrospective cohort study of 16 million people.
Kurt Taylor, Sophie Eastwood, Venexia Walker, Genevieve Cezard, Rochelle Knight, Alex Walker

Lancet Diabetes Endocrinol· August 2024

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Impact of COVID-19 on recorded blood pressure screening and hypertension management in England: an analysis of monthly changes in the quality and outcomes framework indicators in OpenSAFELY.
Milan Wiedemann, Victoria Speed, Christine Cunningham, Rose Higgins, Helen J Curtis, Alex J Walker

Open Heart· August 2024

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Effectiveness of mRNA COVID-19 Vaccines as First Booster Doses in England: An Observational Study in OpenSAFELY-TPP.
Elsie M F Horne, William J Hulme, Edward P K Parker, Ruth H Keogh, Elizabeth J Williamson, Venexia M Walker, Alex J Walker

Epidemiology· July 2024

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Changes in opioid prescribing during the COVID-19 pandemic in England: an interrupted time-series analysis in the OpenSAFELY-TTP cohort.
Andrea L Schaffer, Colm D Andrews, Andrew D Brown, Richard Croker, William J Hulme, Alex J Walker

Lancet Public Health· July 2024

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Changes in sick notes associated with COVID-19 from 2020 to 2022: a cohort study in 24 million primary care patients in OpenSAFELY-TPP.
Andrea L Schaffer, Robin Y Park, John Tazare, Krishnan Bhaskaran, Brian MacKenna, Alex Walker

BMJ Open· July 2024

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Consistency, completeness and external validity of ethnicity recording in NHS primary care records: a cohort study in 25 million patients' records at source using OpenSAFELY.

BMC Med· July 2024

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OpenSAFELY: A platform for analysing electronic health records designed for reproducible research.
Linda Nab, Andrea L Schaffer, William Hulme, Nicholas J DeVito, Iain Dillingham, Alex Walker

Pharmacoepidemiol Drug Saf· June 2024

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Clinical coding of long COVID in primary care 2020-2023 in a cohort of 19 million adults: an OpenSAFELY analysis.
Alasdair D Henderson, Ben Fc Butler-Cole, John Tazare, Laurie A Tomlinson, Michael Marks, Alex J Walker

EClinicalMedicine· June 2024

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Data-Driven Identification of Potentially Successful Intervention Implementations Using 5 Years of Opioid Prescribing Data: Retrospective Database Study.
Lisa Em Hopcroft, Helen J Curtis, Richard Croker, Felix Pretis, Peter Inglesby, Alex J Walker

JMIR Public Health Surveill· June 2024

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