Andrew J. Copas

Capper Street
London, ENG, United Kingdom

Last Updated: 09/26/2026

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Found 280 publications

What is estimated in cluster randomized crossover trials with informative sizes? A survey of estimands and common estimators.

What is estimated in cluster randomized crossover trials with informative sizes? A survey of estimands and common estimators.

Journal: Statistical methods in medical research

Published: August 08, 2026

The interaction between chronic hepatitis B (CHB) and Metabolic dysfunction-associated steatotic liver disease (MASLD) in a diverse central London population.

The interaction between chronic hepatitis B (CHB) and Metabolic dysfunction-associated steatotic liver disease (MASLD) in a diverse central London population.

Journal: medRxiv : the preprint server for health sciences

Published: June 29, 2026

CRT-Estimands Framework: consensus based extension of the ICH E9(R1) addendum for cluster randomised trials.

CRT-Estimands Framework: consensus based extension of the ICH E9(R1) addendum for cluster randomised trials.

Journal: BMJ (Clinical research ed.)

Published: May 21, 2026

Choice of estimands and estimators affected the interpretation of results for some outcomes in a cluster-randomised trial (RESTORE) due to informative cluster size.

Choice of estimands and estimators affected the interpretation of results for some outcomes in a cluster-randomised trial (RESTORE) due to informative cluster size.

Journal: Journal of clinical epidemiology

Published: May 07, 2026

Corrigendum to "Sexually transmitted infection testing and key outcomes following implementation of online postal self-sampling into sexual health services in England: a retrospective observational study of routinely collected service-level healthcare data" Lancet Reg Health Eur. 2025 Nov 29;61:101541.

Corrigendum to "Sexually transmitted infection testing and key outcomes following implementation of online postal self-sampling into sexual health services in England: a retrospective observational study of routinely collected service-level healthcare data" Lancet Reg Health Eur. 2025 Nov 29;61:101541.

Journal: The Lancet regional health. Europe

Published: May 06, 2026

Manualised package intervention to achieve treatment adherence in people with tuberculosis: the IMPACT pilot cluster-RCT.

Manualised package intervention to achieve treatment adherence in people with tuberculosis: the IMPACT pilot cluster-RCT.

Journal: Health technology assessment (Winchester, England)

Published: April 20, 2026

Implementation of the VIVALDI Social Care data pipeline for monitoring and research of infections in care homes for older adults in the UK.

Implementation of the VIVALDI Social Care data pipeline for monitoring and research of infections in care homes for older adults in the UK.

Journal: International journal of medical informatics

Published: April 01, 2026

Use of estimands in cluster randomised trials: A review.

Use of estimands in cluster randomised trials: A review.

Journal: Clinical trials (London, England)

Published: February 17, 2026

Asymptomatic testing compared with standard care of the care home staff in shaping care home COVID-19 testing policy: the VIVALDI-CT pragmatic cluster RCT (VIVALDI-CT).

Asymptomatic testing compared with standard care of the care home staff in shaping care home COVID-19 testing policy: the VIVALDI-CT pragmatic cluster RCT (VIVALDI-CT).

Journal: Health and social care delivery research

Published: February 16, 2026

Can co-designing interventions with affected communities help prevent violence against women? Findings from a process evaluation of the E le Saua le Alofa (Love Shouldn't Hurt) pilot in Samoa.

Can co-designing interventions with affected communities help prevent violence against women? Findings from a process evaluation of the E le Saua le Alofa (Love Shouldn't Hurt) pilot in Samoa.

Journal: Health policy and planning

Published: January 12, 2026

The impacts of introducing online postal self-sampling for sexually transmitted infections on the sustainability and equity of sexual health systems: lessons learned from a multi-method UK-wide realist evaluation.

The impacts of introducing online postal self-sampling for sexually transmitted infections on the sustainability and equity of sexual health systems: lessons learned from a multi-method UK-wide realist evaluation.

Journal: BMC medicine

Published: December 02, 2025

E le Saua le Alofa (Love shouldn't hurt): exploring the acceptability, feasibility and potential impact of a co-developed intervention to prevent violence against women in Samoa.

E le Saua le Alofa (Love shouldn't hurt): exploring the acceptability, feasibility and potential impact of a co-developed intervention to prevent violence against women in Samoa.

Journal: BMC public health

Published: November 06, 2025

Showing 1-12 of 280

Last Updated: 09/26/2026