Publications by authors named "Helen Curtis"

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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, Helen J Curtis

Epidemiology· January 2026

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The impact of COVID-19 lockdowns on primary care contact among vulnerable populations in England: a controlled interrupted time-series study.
Scott R Walter, Chris Salisbury, Lauren J Scott, Frank de Vocht, John Macleod, Helen J Curtis

BJGP Open· December 2025

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Opioid prescribing to people on orthopaedic waiting lists during the covid-19 pandemic in England: retrospective cohort study using linked electronic health record data in OpenSAFELY-TPP.
Rose Higgins, Rebecca M Smith, Iain Dillingham, Jane Quinlan, Victoria Speed, Helen J Curtis

BMJ Med· December 2025

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Trends and variation in the use of andexanet alfa for the reversal of direct oral anticoagulants in NHS trusts in England.
Louis Fisher, Richard Buka, Rosalind Byrne, Stephen Black, Helen J Curtis

Br J Clin Pharmacol· December 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, Helen J Curtis

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, Helen J Curtis

Br J Gen Pract· July 2025

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OpenSAFELY: The impact of COVID-19 on azathioprine, leflunomide and methotrexate monitoring, and factors associated with change in monitoring rate.
Andrew D Brown, Louis Fisher, Helen J Curtis, Milan Wiedemann, William J Hulme

Br J Clin Pharmacol· 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, Helen Curtis

BMJ Ment Health· April 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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Patient decision aids for aortic stenosis and chronic coronary artery disease: a systematic review and meta-analysis.
Emma Harris, Alex Benham, John Stephenson, Dwayne Conway, Aun-Yeong Chong, Helen Curtis

Eur J Cardiovasc Nurs· September 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

Open Heart· August 2024

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Interpreting pathology test result values with comparators (< , >) in Electronic Health Records research: an OpenSAFELY short data report.
Helen J Curtis, Louis Fisher, David Evans, , Sebastian Bacon

Wellcome Open Res· July 2024

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The impact of COVID-19 on medication reviews in English primary care. An OpenSAFELY-TPP analysis of 20 million adult electronic health records.

Br J Clin Pharmacol· July 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, Helen J Curtis

Epidemiology· 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, Helen Curtis

Pharmacoepidemiol Drug Saf· 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

JMIR Public Health Surveill· June 2024

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Incidence and treatment of group A streptococcal infections during covid-19 pandemic and 2022 outbreak: retrospective cohort study in England using OpenSAFELY-TPP.
Christine Cunningham, Louis Fisher, Christopher Wood, Victoria Speed, Andrew D Brown, Helen Curtis

BMJ Med· May 2024

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Implementing Germ Defence digital behaviour change intervention via all primary care practices in England to reduce respiratory infections during the COVID-19 pandemic: an efficient cluster randomised controlled trial using the OpenSAFELY platform.
Ben Ainsworth, Jeremy Horwood, Scott R Walter, Sascha Miller, Melanie Chalder, Helen J Curtis

Implement Sci· December 2023

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Comparative effectiveness of sotrovimab and molnupiravir for preventing severe COVID-19 outcomes in patients on kidney replacement therapy: observational study using the OpenSAFELY-UKRR and SRR databases.
Bang Zheng, Jacqueline Campbell, Edward J Carr, John Tazare, Linda Nab, Helen J Curtis

Clin Kidney J· November 2023

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Comparative effectiveness of nirmatrelvir/ritonavir versus sotrovimab and molnupiravir for preventing severe COVID-19 outcomes in non-hospitalised high-risk patients during Omicron waves: observational cohort study using the OpenSAFELY platform.
Bang Zheng, John Tazare, Linda Nab, Amelia Ca Green, Helen J Curtis

Lancet Reg Health Eur· November 2023

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Impact of the COVID-19 pandemic on antipsychotic prescribing in individuals with autism, dementia, learning disability, serious mental illness or living in a care home: a federated analysis of 59 million patients' primary care records in situ using OpenSAFELY.
Orla Macdonald, Amelia Green, Alex Walker, Helen Curtis, Richard Croker

BMJ Ment Health· September 2023

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Eleven key measures for monitoring general practice clinical activity during COVID-19: A retrospective cohort study using 48 million adults' primary care records in England through OpenSAFELY.
Louis Fisher, Helen J Curtis, Richard Croker, Milan Wiedemann, Victoria Speed

Elife· July 2023

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First dose COVID-19 vaccine coverage amongst adolescents and children in England: an analysis of 3.21 million patients' primary care records in situ using OpenSAFELY.
Lisa E Hopcroft, Helen J Curtis, Andrew D Brown, William J Hulme, Colm D Andrews

Wellcome Open Res· June 2023

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