Projects
This page shows the 214 projects that have been approved to run in OpenSAFELY.
Projects numbered 1-155 were approved during the COVID-19 pandemic under legal powers issued by the Secretary of State: Regulation 3(4) of the Health Service (Control of Patient Information) Regulations 2002 – COPI Regulations. Under this emergency legal power, the Type 1 Opt-out [archived here] (which a patient can register with their GP surgery to prevent their GP data from being shared outside the GP practice for planning or research purposes) was not required to be upheld for research and planning purposes in the pandemic. Therefore, for projects 1-155 a patient who had registered a Type 1 Opt-out could have had their GP health information used (anonymously) in these projects.
In June 2023, the legal basis for OpenSAFELY’s operation changed [archived here] from the emergency COPI Regulations to the COVID-19 Public Health Directions 2020. Under this Direction, the Type 1 Opt-out will be upheld for all new projects (after 155).
In June 2025, the government issued new Directions that make it possible to conduct research on any healthcare topic. As such, projects after number 205 are not confined to COVID-19 studies and cover a wide range of health topics.
OpenSAFELY Projects
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Project #66: Changes in PINCER indicators throughout the COVID-19 pandemic
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #65: Describing trends and variation in HbA1c levels during COVID-19 in 24 million patients’ primary care records using OpenSAFELY
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #64: Short-term safety of COVID-19 vaccines in England 2020/21 – acute venous thromboembolic events
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #63: Short-term safety of COVID-19 vaccines in England 2020/21 – neurological events
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #62: Comparing effectiveness of the Pfizer-BioNTech vaccine with the Oxford-AstraZeneca vaccine in Health and Social Care workers in England
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #61: Estimating COVID-19 vaccine effectiveness in early recipients of the vaccine under the UK national vaccination programme
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #60: Describing the rates of COVID-19 vaccine breakthrough in fully vaccinated individuals in England
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #59: Care homes excess mortality
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #58: Carehomes Short Data Report
Short data report project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #57: OpenSAFELY NHS Service Restoration Observatory: describing trends and variation in key measures of general practice clinical activity
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #56: Mortality among Care Home Residents in England
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #55: Potentially inappropriate prescribing of DOACs to patients with a mechanical heart valve throughout the COVID-19 pandemic
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #54: Association between living with children and outcomes from COVID-19: an update of an OpenSAFELY cohort study in England
Audit, and research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #53: Short report for JCVI
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #52: Risks of COVID-19 hospital admission and death for people with learning disabilities – a cohort study
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #51: Predicting risk of COVID-19 mortality: comparison of methods
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #50: Trends and clinical characteristics of COVID-19 vaccine recipients
Audit, and research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #49: Association between household composition and severe COVID-19 outcomes in older people by ethnicity: an observational cohort study using the OpenSAFELY platform
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #48: Recording of “COVID-19 vaccine declined” among vaccination priority groups
Audit project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #47: OpenSAFELY NHS Service Restoration Observatory 1: describing trends and variation in primary care clinical activity for 23.3 million patients in England during the first wave of COVID-19
Audit project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #46: OpenSAFELY: impact of national guidance on switching anticoagulant therapy during COVID-19 pandemic
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #45: Overall and cause-specific hospitalisation and death after COVID-19 hospitalisation in England: cohort study in OpenSAFELY using linked primary care, secondary care and death registration data
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #44: Pre-Covid: Anti-coags
Research project run by NHS England (in collaboration with University of Oxford and LSHTM).
COVID-19 -
Project #43: Ethnic differences in SARS-CoV-2 infection and COVID-19-related hospitalisation, intensive care unit admission, and death
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #42: HIV infection and COVID-19 related death
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #41: Factors associated with deaths due to COVID-19 versus other causes
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #40: Use of non-steroidal anti-inflammatory drugs and risk of death from COVID-19
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #39: Effect of pre-exposure use of hydroxychloroquine on COVID-19 death in patients with rheumatoid arthritis or systemic lupus erythematosus
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #38: Inhaled corticosteroids and risk of COVID-19 death
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19 -
Project #37: Factors associated with COVID-19 related death
Research project run by University of Oxford and London School of Hygiene and Tropical Medicine.
COVID-19