Copas, Andrew

Sexual behaviour in Britain: Partnerships, practices, and HIV risk behaviours.

Johnson, A. M., Mercer, C. H., Erens, B., Copas, A. J., McManus, S., Wellings, K., Fenton, K. A., Korovessis, C., Macdowall, W., Nanchahal, K., et al. (2001) · The Lancet

HIV/AIDS Research and InterventionsAdolescent Sexual and Reproductive Health

Cited by 815

Changes in sexual attitudes and lifestyles in Britain through the life course and over time: findings from the National Surveys of Sexual Attitudes and Lifestyles (Natsal)

Mercer, C. H., Tanton, C., Prah, P., Erens, B., Sonnenberg, P., Clifton, S., Macdowall, W., Lewis, R., Field, N., Datta, J., et al. (2013) · The Lancet

Adolescent Sexual and Reproductive HealthLGBTQ Health, Identity, and Policy

Cited by 724

Reporting of stepped wedge cluster randomised trials: extension of the CONSORT 2010 statement with explanation and elaboration

Hemming, K., Taljaard, M., McKenzie, J. E., Hooper, R., Copas, A., Thompson, J. A., Dixon-Woods, M., Aldcroft, A., Doussau, A., Grayling, M., et al. (2018) · BMJ

Meta-analysis and systematic reviewsStatistical Methods in Clinical Trials

Cited by 475

Methods for sample size determination in cluster randomized trials

Rutterford, C., Copas, A., & Eldridge, S. (2015) · International Journal of Epidemiology

Statistical Methods in Clinical TrialsMeta-analysis and systematic reviews

Cited by 429

Designing a stepped wedge trial: three main designs, carry-over effects and randomisation approaches

Copas, A. J., Lewis, J. J., Thompson, J. A., Davey, C., Baio, G., & Hargreaves, J. R. (2015) · Trials

Statistical Methods in Clinical TrialsHealth Policy Implementation Science

Cited by 242

How Do Women Prepare for Pregnancy? Preconception Experiences of Women Attending Antenatal Services and Views of Health Professionals

Stephenson, J., Patel, D., Barrett, G., Howden, B., Copas, A., Ojukwu, O., Pandya, P., & Shawe, J. (2014) · PLoS ONE

Maternal and Neonatal HealthcareReproductive Health and Contraception

Cited by 210

Sample size calculation for a stepped wedge trial

Baio, G., Copas, A., Ambler, G., Hargreaves, J., Beard, E., & Omar, R. Z. (2015) · Trials

Statistical Methods in Clinical TrialsHealth Policy Implementation Science

Cited by 163

Condoms and seat belts: the parallels and the lessons

Richens, J., Imrie, J., & Copas, A. (2000) · The Lancet

HIV/AIDS Research and InterventionsTraffic and Road Safety

Cited by 144

Stepped wedge randomised controlled trials: systematic review of studies published between 2010 and 2014

Beard, E., Lewis, J. J., Copas, A., Davey, C., Osrin, D., Baio, G., Thompson, J. A., Fielding, K. L., Omar, R. Z., Ononge, S., et al. (2015) · Trials

Health Policy Implementation ScienceStatistical Methods in Clinical Trials

Cited by 135

The eSexual Health Clinic system for management, prevention, and control of sexually transmitted infections: exploratory studies in people testing for Chlamydia trachomatis

Estcourt, C. S., Gibbs, J., Sutcliffe, L. J., Gkatzidou, V., Tickle, L., Hone, K., Aicken, C., Lowndes, C. M., Harding-Esch, E. M., Eaton, S., et al. (2017) · The Lancet Public Health

Telemedicine and Telehealth ImplementationReproductive tract infections research

Cited by 69

Learning About Sex: Results From Natsal 2000

Macdowall, W., Wellings, K., Mercer, C. H., Nanchahal, K., Copas, A. J., McManus, S., Fenton, K. A., Erens, B., & Johnson, A. M. (2006) · Health Education & Behavior

Adolescent Sexual and Reproductive HealthAdolescent Health and Behaviors

Cited by 39

Stepped wedge trials with continuous recruitment require new ways of thinking

Hooper, R., & Copas, A. (2019) · Journal of Clinical Epidemiology

Statistical Methods in Clinical TrialsHealth Policy Implementation Science

Cited by 34