Personal information

Propensity scores, Observational data
United Kingdom

Biography

Elizabeth Williamson is a medical statistician who has had a wide experience working in both applied and methodological roles over the last 10 years. Her PhD focused on the use of propensity scores to analyse non-randomised data. Her current research focuses on the analysis of routinely collected data, particularly linked primary care electronic health record data.

Activities

Employment (7)

London School of Hygiene & Tropical Medicine: London, Camden, GB

2020-04-07 to present | Professor of Biostatistics and Health Data Science (Department of Medical Statistics)
Employment
Source: Self-asserted source
Elizabeth Williamson

London School of Hygiene & Tropical Medicine: London, London, GB

2016-06-15 to 2020-04-07 | Associate Professor (Department of Medical Statistics)
Employment
Source: Self-asserted source
Elizabeth Williamson

London School of Hygiene and Tropical Medicine: London, London, GB

2014-04 to 2016-06-15 | Lecturer (Department of Medical Statistics)
Employment
Source: Self-asserted source
Elizabeth Williamson

Monash University: Clayton, VIC, AU

2010-03 to 2014-04 | Research Fellow (Department of Epidemiology & Preventive Medicine)
Employment
Source: Self-asserted source
Elizabeth Williamson

University of Melbourne: Melbourne, VIC, AU

2009-03 to 2014-04 | Research Fellow (School of Population and Global Health)
Employment
Source: Self-asserted source
Elizabeth Williamson

Murdoch Childrens Research Institute: Parkville, VIC, AU

2007-09 to 2010-03 | Research Fellow
Employment
Source: Self-asserted source
Elizabeth Williamson

University of Sydney: Sydney, NSW, AU

2007-02 to 2007-10
Employment
Source: Self-asserted source
Elizabeth Williamson

Education and qualifications (3)

London School of Hygiene and Tropical Medicine: London, London, GB

2007 | PhD
Education
Source: Self-asserted source
Elizabeth Williamson

University of Leicester: Leicester, Leicester, GB

2002 to 2003 | MSc
Education
Source: Self-asserted source
Elizabeth Williamson

University of Cambridge: Cambridge, Cambridgeshire, GB

2002 | BA
Education
Source: Self-asserted source
Elizabeth Williamson

Funding (1)

Novel statistical methods to unlock the potential of routinely collected health data: COVID-19 & beyond

2022-03-14 to 2027-03-13 | Grant
Wellcome Trust (London, UK, GB)
GRANT_NUMBER:

224485/Z/21/Z

Source: check_circle
WT Grant Tracker

Works (50 of 91)

Items per page:
Page 1 of 2

Estimating causal effects for binary outcomes using per-decision inverse probability weighting

Biostatistics
2024-12-31 | Journal article
Contributors: Yihan Bao; Lauren Bell; Elizabeth Williamson; Claire Garnett; Tianchen Qian
Source: check_circle
Crossref

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

Wellcome Open Research
2024-12-16 | Journal article
Contributors: Elizabeth J. Williamson; John Tazare; Krishnan Bhaskaran; Alex J. Walker; Helen I McDonald; Laurie A. Tomlinson; Sebastian Bacon; Chris Bates; Helen J. Curtis; Harriet Forbes et al.
Source: check_circle
Crossref
grade
Preferred source (of 2)‎

Cardiorenal effects of angiotensin-converting enzyme inhibitors and angiotensin receptor blockers among people underrepresented in trials: analysis of routinely collected data with emulation of a reference trial (ONTARGET)

American Journal of Epidemiology
2024-12-02 | Journal article
Contributors: Paris J Baptiste; Angel Y S Wong; Anna Schultze; Catherine M Clase; Clémence Leyrat; Elizabeth Williamson; Emma Powell; Johannes F E Mann; Marianne Cunnington; Koon Teo et al.
Source: check_circle
Crossref

Effectiveness of mRNA COVID-19 Vaccines as First Booster Doses in England: An Observational Study in OpenSAFELY-TPP

Epidemiology
2024-07 | Journal article
Contributors: Elsie M. F. Horne; William J. Hulme; Edward P. K. Parker; Ruth H. Keogh; Elizabeth J. Williamson; Venexia M. Walker; Tom M. Palmer; Rachel Denholm; Rochelle Knight; Helen J. Curtis et al.
Source: check_circle
Crossref

On variance estimation of the inverse probability‐of‐treatment weighting estimator: A tutorial for different types of propensity score weights

Statistics in Medicine
2024-06-15 | Journal article
Contributors: Andriana Kostouraki; David Hajage; Bernard Rachet; Elizabeth J. Williamson; Guillaume Chauvet; Aurélien Belot; Clémence Leyrat
Source: check_circle
Crossref

Assessing efficacy in non‐inferiority trials with non‐adherence to interventions: Are intention‐to‐treat and per‐protocol analyses fit for purpose?

Statistics in Medicine
2024-05-30 | Journal article
Contributors: Matthew Dodd; James Carpenter; Jennifer A. Thompson; Elizabeth Williamson; Katherine Fielding; Diana Elbourne
Source: check_circle
Crossref

Cardiorenal effects of dual blockade with Angiotensin-converting enzyme inhibitors and Angiotensin receptor blockers in people with CKD: analysis of routinely collected data with emulation of a reference trial (ONTARGET)

2024-05-28 | Preprint
Contributors: Paris J Baptiste; Angel YS Wong; Anna Schultze; Catherine M Clase; Clémence Leyrat; Elizabeth Williamson; Emma Powell; Johannes FE Mann; Marianne Cunnington; Koon Teo et al.
Source: check_circle
Crossref

Multiple imputation approaches for epoch-level accelerometer data in trials

Statistical Methods in Medical Research
2023-10 | Journal article
Contributors: Mia S Tackney; Elizabeth Williamson; Derek G Cook; Elizabeth Limb; Tess Harris; James Carpenter
Source: check_circle
Crossref

Timeliness of childhood vaccination in England: A population-based cohort study

Vaccine
2023-09 | Journal article
Contributors: Anne M. Suffel; Jemma L. Walker; Elizabeth Williamson; Helen I. McDonald; Charlotte Warren-Gash
Source: check_circle
Crossref

Sustained hypothetical interventions on midlife alcohol consumption in relation to all-cause and cancer mortality: The Australian Longitudinal Study on Women’s Health

2023-07-21 | Other
Contributors: Yi Yang; Brigid Lynch; Pierre Dugué; Gita Mishra; Dallas English; Elizabeth Williamson; Harindra Jayasekara
Source: check_circle
Crossref

Association between living with children, vaccination, and outcomes from COVID-19: an OpenSAFELY cohort study of 12 million adults in England during 2021–22 [version 1; peer review: 3 approved with reservations]

2023-07-10 | Journal article
Part of ISSN: 2398-502X
Funded by GRANT_NUMBER:

222097

Funded by GRANT_NUMBER: HDRUK2021.000, 2021.0157
Funded by GRANT_NUMBER: NIHR135559, COV-LT2-0073
Contributors: Thomas E Cowling; Harriet Forbes; Kevin Wing; John Tazare; Anna Schultze; Caroline E Morton; Sebastian Bacon; Brian MacKenna; Alex J. Walker; Will Hulme et al.
Source: check_circle
Wellcome Open Research

How Notifications Affect Engagement With a Behavior Change App: Results From a Micro-Randomized Trial

JMIR mHealth and uHealth
2023-06-09 | Journal article
Contributors: Lauren Bell; Claire Garnett; Yihan Bao; Zhaoxi Cheng; Tianchen Qian; Olga Perski; Henry W W Potts; Elizabeth Williamson
Source: check_circle
Crossref

Challenges in Estimating the Effectiveness of COVID-19 Vaccination Using Observational Data

Annals of Internal Medicine
2023-05 | Journal article
Contributors: William J. Hulme; Elizabeth Williamson; Elsie M.F. Horne; Amelia Green; Helen I. McDonald; Alex J. Walker; Helen J. Curtis; Caroline E. Morton; Brian MacKenna; Richard Croker et al.
Source: check_circle
Crossref

Propensity score matching after multiple imputation when a confounder has missing data

Statistics in Medicine
2023-03-30 | Journal article
Contributors: Corentin Ségalas; Clémence Leyrat; James R. Carpenter; Elizabeth Williamson
Source: check_circle
Crossref

Challenges in estimating waning effectiveness of two doses of BNT162b2 and ChAdOx1 COVID-19 vaccines beyond six months: an OpenSAFELY cohort study using linked electronic health records

2023-01-05 | Preprint
Contributors: Elsie MF Horne; William J Hulme; Ruth H Keogh; Tom M Palmer; Elizabeth J Williamson; Edward PK Parker; Venexia M Walker; Rochelle Knight; Yinghui Wei; Kurt Taylor et al.
Source: check_circle
Crossref

Comparison of methods for predicting COVID-19-related death in the general population using the OpenSAFELY platform

Diagnostic and Prognostic Research
2022-12 | Journal article
Contributors: Elizabeth J. Williamson; John Tazare; Krishnan Bhaskaran; Helen I. McDonald; Alex J. Walker; Laurie Tomlinson; Kevin Wing; Sebastian Bacon; Chris Bates; Helen J. Curtis et al.
Source: check_circle
Crossref

Comparative effectiveness of BNT162b2 versus mRNA-1273 boosting in England: a cohort study in OpenSAFELY-TPP

2022-07-30 | Preprint
Contributors: William J Hulme; Elsie MF Horne; Edward PK Parker; Ruth H Keogh; Elizabeth J Williamson; Venexia Walker; Tom Palmer; Helen J Curtis; Alex Walker; Amir Mehrkar et al.
Source: check_circle
Crossref

Comparative effectiveness of ChAdOx1 versus BNT162b2 covid-19 vaccines in health and social care workers in England: cohort study using OpenSAFELY

BMJ
2022-07-20 | Journal article
Contributors: William J Hulme; Elizabeth J Williamson; Amelia C A Green; Krishnan Bhaskaran; Helen I McDonald; Christopher T Rentsch; Anna Schultze; John Tazare; Helen J Curtis; Alex J Walker et al.
Source: check_circle
Crossref

Waning effectiveness of BNT162b2 and ChAdOx1 covid-19 vaccines over six months since second dose: OpenSAFELY cohort study using linked electronic health records

BMJ
2022-07-20 | Journal article
Contributors: Elsie M F Horne; William J Hulme; Ruth H Keogh; Tom M Palmer; Elizabeth J Williamson; Edward P K Parker; Amelia Green; Venexia Walker; Alex J Walker; Helen Curtis et al.
Source: check_circle
Crossref

Effectiveness of BNT162b2 booster doses in England: an observational study in OpenSAFELY-TPP

2022-06-06 | Preprint
Contributors: William J Hulme; Elizabeth J Williamson; Elsie Horne; Amelia CA Green; Linda Nab; Ruth Keogh; Edward PK Parker; Venexia M Walker; Tom M Palmer; Helen J Curtis et al.
Source: check_circle
Crossref

Rates of serious clinical outcomes in survivors of hospitalisation with COVID-19 in England: a descriptive cohort study within the OpenSAFELY platform [version 1; peer review: 2 approved, 1 approved with reservations]

2022-04-29 | Journal article
Part of ISSN: 2398-502X
Funded by GRANT_NUMBER:

107731

Funded by GRANT_NUMBER:

201375

Funded by GRANT_NUMBER:

MR/N013638/1

Funded by GRANT_NUMBER:

MR/V015737/1

Contributors: The OpenSAFELY Collaborative; John Tazare; Alex J. Walker; Laurie A. Tomlinson; George Hickman; Christopher T. Rentsch; Elizabeth J. Williamson; Krishnan Bhaskaran; David Evans; Kevin Wing et al.
Source: check_circle
Wellcome Open Research
grade
Preferred source (of 2)‎

How Notifications Affect Engagement With a Behavior Change App: Results From a Micro-Randomized Trial (Preprint)

2022-03-29 | Preprint
Contributors: Lauren Bell; Claire Garnett; Yihan Bao; Zhaoxi Cheng; Tianchen Qian; Olga Perski; Henry W W Potts; Elizabeth Williamson
Source: check_circle
Crossref

Waning effectiveness of BNT162b2 and ChAdOx1 COVID-19 vaccines over six months since second dose: a cohort study using linked electronic health records

2022-03-23 | Preprint
Contributors: Elsie MF Horne; William J Hulme; Ruth H Keogh; Tom M Palmer; Elizabeth J Williamson; Edward PK Parker; Amelia Green; Venexia Walker; Alex J Walker; Helen Curtis et al.
Source: check_circle
Crossref

A comprehensive high cost drugs dataset from the NHS in England - An OpenSAFELY-TPP Short Data Report [version 1; peer review: 3 approved]

2021-12-22 | Journal article
Part of ISSN: 2398-502X
Funded by GRANT_NUMBER:

107731

Funded by GRANT_NUMBER:

201375

Funded by GRANT_NUMBER: 205039
Funded by GRANT_NUMBER:

222097

Contributors: Anna Rowan; Chris Bates; William Hulme; David Evans; Simon Davy; Nicholas A Kennedy; James Galloway; Kathryn E Mansfield; Katie Bechman; Julian Matthewman et al.
Source: check_circle
Wellcome Open Research

Describing the population experiencing COVID-19 vaccine breakthrough following second vaccination in England: A cohort study from OpenSAFELY

2021-11-08 | Preprint
Contributors: Amelia Green; Helen Curtis; William Hulme; Elizabeth Williamson; Helen McDonald; Krishnan Bhaskaran; Christopher Rentsch; Anna Schultze; Brian MacKenna; Viyaasan Mahalingasivam et al.
Source: check_circle
Crossref

The BRAIN-Q, a tool for assessing self-reported sport-related concussions for epidemiological studies

Epidemiology and Health
2021-10-19 | Journal article
Contributors: Laura James; Madeline Davies; Saba Mian; Giulia Seghezzo; Elizabeth Williamson; Simon Kemp; Nigel Arden; Damien McElvenny; Neil Pearce; Valentina Gallo
Source: check_circle
Crossref

Comparative effectiveness of ChAdOx1 versus BNT162b2 COVID-19 vaccines in Health and Social Care workers in England: a cohort study using OpenSAFELY

2021-10-18 | Other
Contributors: William J Hulme; Elizabeth J Williamson; Amelia Green; Krishnan Bhaskaran; Helen I McDonald; Christopher T Rentsch; Anna Schultze; John Tazare; Helen J Curtis; Alex J Walker et al.
Source: check_circle
Crossref

Medications for chronic obstructive pulmonary disease: a historical non-interventional cohort study with validation against RCT results

Health Technology Assessment
2021-08 | Journal article
Contributors: Kevin Wing; Elizabeth Williamson; James R Carpenter; Lesley Wise; Sebastian Schneeweiss; Liam Smeeth; Jennifer K Quint; Ian Douglas
Source: check_circle
Crossref

What on‐line searches tell us about public interest and potential impact on behaviour in response to minimum unit pricing of alcohol in Scotland

Addiction
2021-08 | Journal article
Contributors: David A. Leon; Elad Yom‐Tov; Anne M. Johnson; Mark Petticrew; Elizabeth Williamson; Vasileios Lampos; Ingemar Cox
Source: check_circle
Crossref

Identifying Care Home Residents in Electronic Health Records - An OpenSAFELY Short Data Report [version 1; peer review: 2 approved]

2021-04-27 | Journal article
Part of ISSN: 2398-502X
Contributors: Anna Schultze; Chris Bates; Jonathan Cockburn; Brian MacKenna; Emily Nightingale; Helen J Curtis; William J Hulme; Caroline E Morton; Richard Croker; Seb Bacon et al.
Source: check_circle
Wellcome Open Research

Real world effects of COPD medications: a cohort study with validation against results from randomised controlled trials

European Respiratory Journal
2021-03 | Journal article
Contributors: Kevin Wing; Elizabeth Williamson; James R. Carpenter; Lesley Wise; Sebastian Schneeweiss; Liam Smeeth; Jennifer K. Quint; Ian Douglas
Source: check_circle
Crossref

The effect of statins on muscle symptoms in primary care: the StatinWISE series of 200 N-of-1 RCTs

Health Technology Assessment
2021-03 | Journal article
Contributors: Emily Herrett; Elizabeth Williamson; Kieran Brack; Alexander Perkins; Andrew Thayne; Haleema Shakur-Still; Ian Roberts; Danielle Prowse; Danielle Beaumont; Zahra Jamal et al.
Source: check_circle
Crossref

Predicting COVID-19 related death using the OpenSAFELY platform

2021-03-01 | Other
Contributors: Elizabeth J Williamson; John Tazare; Krishnan Bhaskaran; Helen I McDonald; Alex J Walker; Laurie Tomlinson; Kevin Wing; Sebastian Bacon; Chris Bates; Helen J Curtis et al.
Source: check_circle
Crossref

Statin treatment and muscle symptoms: series of randomised, placebo controlled n-of-1 trials

BMJ
2021-02-24 | Journal article
Contributors: Emily Herrett; Elizabeth Williamson; Kieran Brack; Danielle Beaumont; Alexander Perkins; Andrew Thayne; Haleema Shakur-Still; Ian Roberts; Danielle Prowse; Ben Goldacre et al.
Source: check_circle
Crossref

Access to routinely collected health data for clinical trials – review of successful data requests to UK registries

Trials
2020-12 | Journal article
Contributors: Sarah Lensen; Archie Macnair; Sharon B. Love; Victoria Yorke-Edwards; Nurulamin M. Noor; Meredith Martyn; Alexandra Blenkinsop; Carlos Diaz-Montana; Graham Powell; Elizabeth Williamson et al.
Source: check_circle
Crossref

Engagement With a Behavior Change App for Alcohol Reduction: Data Visualization for Longitudinal Observational Study

Journal of Medical Internet Research
2020-12-11 | Journal article
Contributors: Lauren Bell; Claire Garnett; Tianchen Qian; Olga Perski; Elizabeth Williamson; Henry WW Potts
Source: check_circle
Crossref

Health on the Move (HOME) Study: Using a smartphone app to explore the health and wellbeing of migrants in the United Kingdom [version 1; peer review: 2 approved]

2020-11-11 | Journal article
Part of ISSN: 2398-502X
Contributors: Robert W. Aldridge; Rachel Burns; Victoria Kirkby; Nadia Elsay; Elizabeth Murray; Olga Perski; Annalan M. Navaratnam; Elizabeth J. Williamson; Ramfis Nieto-Martínez; J. Jaime Miranda et al.
Source: check_circle
Wellcome Open Research
grade
Preferred source (of 2)‎

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

Wellcome Open Research
2020-10-15 | Journal article
Contributors: Elizabeth J. Williamson; John Tazare; Krishnan Bhaskaran; Alex J. Walker; Helen I McDonald; Laurie A. Tomlinson; Sebastian Bacon; Chris Bates; Helen J. Curtis; Harriet Forbes et al.
Source: check_circle
Crossref

Ethnic differences in COVID-19 infection, hospitalisation, and mortality: an OpenSAFELY analysis of 17 million adults in England

2020-09-23 | Other
Contributors: Rohini Mathur; Christopher T Rentsch; Caroline E Morton; William J Hulme; Anna Schultze; Brian MacKenna; Rosalind Eggo; Krishnan Bhaskaran; Angel YS Wong; Elizabeth J Williamson et al.
Source: check_circle
Crossref

Factors associated with COVID-19-related death using OpenSAFELY

Nature
2020-08-20 | Journal article
Contributors: Elizabeth J. Williamson; Alex J. Walker; Krishnan Bhaskaran; Seb Bacon; Chris Bates; Caroline E. Morton; Helen J. Curtis; Amir Mehrkar; David Evans; Peter Inglesby et al.
Source: check_circle
Crossref

OpenSAFELY: Do adults prescribed non-steroidal anti-inflammatory drugs have an increased risk of death from COVID-19?

2020-08-14 | Other
Contributors: Angel YS Wong; Brian MacKenna; Caroline E Morton; Anna Schultze; Alex J Walker; Krishnan Bhaskaran; Jeremy P Brown; Christopher T Rentsch; Elizabeth Williamson; Henry Drysdale et al.
Source: check_circle
Crossref

Engagement With a Behavior Change App for Alcohol Reduction: Data Visualization for Longitudinal Observational Study (Preprint)

2020-08-10 | Other
Contributors: Lauren Bell; Claire Garnett; Tianchen Qian; Olga Perski; Elizabeth Williamson; Henry WW Potts
Source: check_circle
Crossref

Notifications to Improve Engagement With an Alcohol Reduction App: Protocol for a Micro-Randomized Trial

JMIR Research Protocols
2020-08-07 | Journal article
Contributors: Lauren Bell; Claire Garnett; Tianchen Qian; Olga Perski; Henry W W Potts; Elizabeth Williamson
Source: check_circle
Crossref

Propensity scores using missingness pattern information: a practical guide

Statistics in Medicine
2020-05-20 | Journal article
Contributors: Helen A. Blake; Clémence Leyrat; Kathryn E. Mansfield; Shaun Seaman; Laurie A. Tomlinson; James Carpenter; Elizabeth J. Williamson
Source: check_circle
Crossref

OpenSAFELY: factors associated with COVID-19-related hospital death in the linked electronic health records of 17 million adult NHS patients

2020-05-07 | Other
Contributors: Elizabeth Williamson; Alex J Walker; Krishnan Bhaskaran; Seb Bacon; Chris Bates; Caroline E Morton; Helen J Curtis; Amir Mehrkar; David Evans; Peter Inglesby et al.
Source: check_circle
Crossref

Access to routinely collected health data for clinical trials – review of successful data requests to UK registries

2020-04-10 | Other
Contributors: Sarah Lensen; Archie Macnair; Sharon B Love; Victoria Yorke-Edwards; Nurulamin M Noor; Meredith Martyn; Alexandra Blenkinsop; Carlos Diaz-Montana; Graham Powell; Elizabeth Williamson et al.
Source: check_circle
Crossref

Notifications to Improve Engagement With an Alcohol Reduction App: Protocol for a Micro-Randomized Trial (Preprint)

2020-03-12 | Other
Contributors: Lauren Bell; Claire Garnett; Tianchen Qian; Olga Perski; Henry W W Potts; Elizabeth Williamson
Source: check_circle
Crossref

Sustained adherence to a Mediterranean diet and physical activity on all-cause mortality in the Melbourne Collaborative Cohort Study: application of the g-formula

BMC Public Health
2019-12 | Journal article
Contributors: Elizabeth J. Williamson; Julia Polak; Julie A. Simpson; Graham G. Giles; Dallas R. English; Allison Hodge; Lyle Gurrin; Andrew B. Forbes
Source: check_circle
Crossref

Circulating 25-Hydroxyvitamin D Concentration and Risk of Breast, Prostate, and Colorectal Cancers: The Melbourne Collaborative Cohort Study

Cancer Epidemiology, Biomarkers & Prevention
2019-05-01 | Journal article
Contributors: Alicia K. Heath; Allison M. Hodge; Peter R. Ebeling; Darryl W. Eyles; David Kvaskoff; Daniel D. Buchanan; Graham G. Giles; Elizabeth J. Williamson; Dallas R. English
Source: check_circle
Crossref

Million Migrants study of healthcare and mortality outcomes in non-EU migrants and refugees to England: Analysis protocol for a linked population-based cohort study of 1.5 million migrants [version 1; referees: 1 approved]

2019-01-17 | Journal article
Part of ISSN: 2398-502X
Contributors: Rachel Burns; Neha Pathak; Ines Campos-Matos; Dominik Zenner; Srinivasa Vittal Katikireddi; Morris C. Muzyamba; J. Jaime Miranda; Ruth Gilbert; Harry Rutter; Lucy Jones et al.
Source: check_circle
Wellcome Open Research
Items per page:
Page 1 of 2

Peer review (2 reviews for 2 publications/grants)

Review activity for BMC medicine (1)
Review activity for Nature communications (1)