Andrew J Copas (Andrew Copas, A J Copas)

Scopus Author ID ORCID

Publication Activity (10 Years)

Years Active: 2014-2023
Publications (10 Years): 44

Top Topics

Cross Sectional

Gestational Age

Top Venues

Sexually transmitted infections

Clinical trials (London, England)

This page only lists publications with an associated author ORCID identifier.

Publications

Brennan C Kahan, Fan Li, Bryan Blette, Vipul Jairath, Andrew J Copas, Michael Harhay
Informative cluster size in cluster-randomised trials: A case study from the TRIGGER trial. Clinical trials (London, England) (2023)
Nondumiso Mthiyane, Antony M Rapulana, Guy Harling, Andrew J Copas, Maryam Shahmanesh
Effect of multi-level interventions on mental health outcomes among adolescents in sub-Saharan Africa: a systematic review. BMJ open 13 (10) (2023)
Carlos S Grijalva-Eternod, Mohamed Jelle, Hani Mohamed, Katie Waller, Bishar Osman Hussein, Emmanuel Barasa, Andrea Solomon, Sajia Mehjabeen, Andrew J Copas, Edward F Fottrell, Andrew J Seal
Evaluation of conditional cash transfers and mHealth audio messaging in reduction of risk factors for childhood malnutrition in internally displaced persons camps in Somalia: A 2 × 2 factorial cluster-randomised controlled trial. PLoS medicine 20 (2) (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Carlos S Grijalva-Eternod, Mohamed Jelle, Hani Mohamed, Katie Waller, Bishar Osman Hussein, Emmanuel Barasa, Andrea Solomon, Sajia Mehjabeen, Andrew J Copas, Edward F Fottrell, Andrew J Seal
Evaluation of conditional cash transfers and mHealth audio messaging in reduction of risk factors for childhood malnutrition in internally displaced persons camps in Somalia: A 2 × 2 factorial cluster-randomised controlled trial. PLoS medicine 20 (2) (2023)
Carlos S Grijalva-Eternod, Mohamed Jelle, Hani Mohamed, Katie Waller, Bishar Osman Hussein, Emmanuel Barasa, Andrea Solomon, Sajia Mehjabeen, Andrew J Copas, Edward F Fottrell, Andrew J Seal
Evaluation of conditional cash transfers and mHealth audio messaging in reduction of risk factors for childhood malnutrition in internally displaced persons camps in Somalia: A 2 × 2 factorial cluster-randomised controlled trial. PLoS medicine 20 (2) (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Annabelle South, Julia Bailey, Barbara E Bierer, Eva Burnett, William J Cragg, Carlos Diaz-Montana, Katie Gillies, Talia Isaacs, Nalinie Joharatnam-Hogan, Claire Snowdon, Matthew R Sydes, Andrew J Copas
Site staff perspectives on communicating trial results to participants: Cost and feasibility results from the Show RESPECT cluster randomised, factorial, mixed-methods trial. Clinical trials (London, England) (2023)
Kirstin Rebecca Mitchell, Malachi Willis, Emily Dema, Andrew J Baxter, Anne Connolly, Julie Riddell, Raquel Boso Perez, Soazig Clifton, Jo Gibbs, Clare Tanton, Rebecca Sally Geary, Natasha Ratna, Hamish Mohammed, Magnus Unemo, Christopher Bonell, Andrew J Copas, Pam Sonnenberg, Catherine H Mercer, Nigel Field
Sexual and reproductive health in Britain during the first year of the COVID-19 pandemic: cross-sectional population survey (Natsal-COVID-Wave 2) and national surveillance data. Sexually transmitted infections (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Carlos S Grijalva-Eternod, Mohamed Jelle, Hani Mohamed, Katie Waller, Bishar Osman Hussein, Emmanuel Barasa, Andrea Solomon, Sajia Mehjabeen, Andrew J Copas, Edward F Fottrell, Andrew J Seal
Evaluation of conditional cash transfers and mHealth audio messaging in reduction of risk factors for childhood malnutrition in internally displaced persons camps in Somalia: A 2 × 2 factorial cluster-randomised controlled trial. PLoS medicine 20 (2) (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Natalie Adams, Oliver Stirrup, James Blackstone, Maria Krutikov, Jackie A Cassell, Dorina Cadar, Catherine Henderson, Martin Knapp, Lara Goscé, Ruth Leiser, Martyn Regan, Iona Cullen-Stephenson, Robert Fenner, Arpana Verma, Adam Lee Gordon, Susan Hopkins, Andrew J Copas, Nick Freemantle, Paul Flowers, Laura Shallcross
Shaping care home COVID-19 testing policy: a protocol for a pragmatic cluster randomised controlled trial of asymptomatic testing compared with standard care in care home staff (VIVALDI-CT). BMJ open 13 (11) (2023)
Naomi M Saville, Sanju Bhattarai, Helen Harris-Fry, Santosh Giri, Shraddha Manandhar, Joanna Morrison, Andrew J Copas, Bibhu Thapaliya, Abriti Arjyal, Hassan Haghparast-Bidgoli, Sushil C Baral, Sara Hillman
Study protocol for a randomised controlled trial of a virtual antenatal intervention for improved diet and iron intake in Kapilvastu district, Nepal: VALID. BMJ open 13 (2) (2023)
Andrew J Baxter, Rebecca Sally Geary, Emily Dema, Raquel Boso Perez, Julie Riddell, Malachi Willis, Anne Connolly, Laura L Oakley, Andrew J Copas, Jo Gibbs, Christopher Bonell, Pam Sonnenberg, Catherine H Mercer, Soazig Clifton, Nigel Field, Kirstin Rebecca Mitchell
Contraceptive use and pregnancy planning in Britain during the first year of the COVID-19 pandemic: findings from a large, quasi-representative survey (Natsal-COVID). BMJ sexual & reproductive health (2023)
Jo Gibbs, Alison R Howarth, Jessica Sheringham, Louise J Jackson, Geoff Wong, Andrew J Copas, David J Crundwell, Catherine H Mercer, Hamish Mohammed, Jonathan Ross, Ann K Sullivan, Elizabeth Murray, Fiona M Burns
Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK: protocol for ASSIST, a realist evaluation. BMJ open 12 (12) (2022)
Matias C Vieira, Sophie A Relph, Walter Muruet-Gutierrez, Maria Elstad, Bolaji Coker, Natalie Moitt, Louisa Delaney, Chivon Winsloe, Andrew Healey, Kirstie Coxon, Alessandro Alagna, Annette L Briley, Mark Johnson, Louise M Page, Donald Peebles, Andrew H Shennan, Baskaran Thilaganathan, Neil Marlow, Lesley M E McCowan, Christoph Lees, Deborah A Lawlor, Asma Khalil, Jane Sandall, Andrew J Copas, Dharmintra Pasupathy, null null
Evaluation of the Growth Assessment Protocol (GAP) for antenatal detection of small for gestational age: The DESiGN cluster randomised trial. PLoS medicine 19 (6) (2022)
Kirstin Rebecca Mitchell, Michal Shimonovich, Raquel Boso Perez, Emily Dema, Soazig Clifton, Julie Riddell, Andrew J Copas, Clare Tanton, Wendy G Macdowall, Christopher Bonell, Pam Sonnenberg, Catherine H Mercer, Nigel Field
Initial Impacts of COVID-19 on Sex Life and Relationship Quality in Steady Relationships in Britain: Findings from a Large, Quasi-representative Survey (Natsal-COVID). Journal of sex research (2022)
James Blackstone, Oliver Stirrup, Fiona Mapp, Monica Panca, Andrew J Copas, Paul Flowers, Leanne Hockey, James Price, David G Partridge, Christine Peters, Thushan I de Silva, Gaia Nebbia, Luke Blagdon Snell, Rachel McComish, null null, Judith Breuer
Protocol for the COG-UK hospital-onset COVID-19 infection (HOCI) multicentre interventional clinical study: evaluating the efficacy of rapid genome sequencing of SARS-CoV-2 in limiting the spread of COVID-19 in UK NHS hospitals. BMJ open 12 (4) (2022)
Pam Sonnenberg, Dee Menezes, Lily Freeman, Karen J Maxwell, David S Reid, Soazig Clifton, Clare Tanton, Andrew J Copas, Julie Riddell, Emily Dema, Raquel Boso Perez, Jo Gibbs, Mary-Clare Ridge, Wendy G Macdowall, Magnus Unemo, Christopher Bonell, Anne M Johnson, Catherine H Mercer, Kirstin Rebecca Mitchell, Nigel Field
Intimate physical contact between people from different households during the COVID-19 pandemic: a mixed-methods study from a large, quasi-representative survey (Natsal-COVID). BMJ open 12 (2) (2022)
A Rahman, Shakila Thangaratinam, Andrew J Copas, D Zenner, Peter J White, Christopher J Griffiths, Ibrahim Abubakar, Christine McCourt, Heinke Kunst
A feasibility study evaluating the uptake, effectiveness and acceptability of routine screening of pregnant migrants for latent tuberculosis infection in antenatal care: a research protocol. BMJ open 12 (4) (2022)
Jo Gibbs, Alison R Howarth, Jessica Sheringham, Louise J Jackson, Geoff Wong, Andrew J Copas, David J Crundwell, Catherine H Mercer, Hamish Mohammed, Jonathan Ross, Ann K Sullivan, Elizabeth Murray, Fiona M Burns
Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK: protocol for ASSIST, a realist evaluation. BMJ open 12 (12) (2022)
Fedra Vanhuyse, Oliver Stirrup, Aloyce Odhiambo, Tom Palmer, Sarah Dickin, Jolene Skordis, Neha Batura, Hassan Haghparast-Bidgoli, Alex Mwaki, Andrew J Copas
Effectiveness of conditional cash transfers (Afya credits incentive) to retain women in the continuum of care during pregnancy, birth and the postnatal period in Kenya: a cluster-randomised trial. BMJ open 12 (1) (2022)
Emily Dema, Pam Sonnenberg, Jo Gibbs, Anne Conolly, Malachi Willis, Julie Riddell, Raquel Bosó Pérez, Andrew J Copas, Clare Tanton, Chris Bonell, Clarissa Oeser, Soazig Clifton, Magnus Unemo, Catherine H Mercer, Kirstin R Mitchell, Nigel Field
How did the COVID-19 pandemic affect access to condoms, chlamydia and HIV testing, and cervical cancer screening at a population level in Britain? (Natsal-COVID). Sexually transmitted infections (2022)
Jo Gibbs, Alison R Howarth, Jessica Sheringham, Louise J Jackson, Geoff Wong, Andrew J Copas, David J Crundwell, Catherine H Mercer, Hamish Mohammed, Jonathan Ross, Ann K Sullivan, Elizabeth Murray, Fiona M Burns
Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK: protocol for ASSIST, a realist evaluation. BMJ open 12 (12) (2022)
Jo Gibbs, Alison R Howarth, Jessica Sheringham, Louise J Jackson, Geoff Wong, Andrew J Copas, David J Crundwell, Catherine H Mercer, Hamish Mohammed, Jonathan Ross, Ann K Sullivan, Elizabeth Murray, Fiona M Burns
Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK: protocol for ASSIST, a realist evaluation. BMJ open 12 (12) (2022)
Jo Gibbs, Alison R Howarth, Jessica Sheringham, Louise J Jackson, Geoff Wong, Andrew J Copas, David J Crundwell, Catherine H Mercer, Hamish Mohammed, Jonathan Ross, Ann K Sullivan, Elizabeth Murray, Fiona M Burns
Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK: protocol for ASSIST, a realist evaluation. BMJ open 12 (12) (2022)
Jo Gibbs, Alison R Howarth, Jessica Sheringham, Louise J Jackson, Geoff Wong, Andrew J Copas, David J Crundwell, Catherine H Mercer, Hamish Mohammed, Jonathan Ross, Ann K Sullivan, Elizabeth Murray, Fiona M Burns
Assessing the impact of online postal self-sampling for sexually transmitted infections on health inequalities, access to care and clinical outcomes in the UK: protocol for ASSIST, a realist evaluation. BMJ open 12 (12) (2022)
Sarah Dickin, Fedra Vanhuyse, Oliver Stirrup, Carla Liera, Andrew J Copas, Aloyce Odhiambo, Tom Palmer, Hassan Haghparast-Bidgoli, Neha Batura, Alex Mwaki, Jolene Skordis
Implementation of the Afya conditional cash transfer intervention to retain women in the continuum of care: a mixed-methods process evaluation. BMJ open 12 (9) (2022)
Judith M Stephenson, Julia V Bailey, Ann Blandford, Nataliya Brima, Andrew J Copas, Preethy D'Souza, Anasztazia Gubijev, Rachael Maree Hunter, Jill Shawe, Greta Rait, Sandy Oliver
An interactive website to aid young women's choice of contraception: feasibility and efficacy RCT. Health technology assessment (Winchester, England) 24 (56) (2021)
Wendy G Macdowall, Soazig Clifton, M J Palmer, Clare Tanton, Andrew J Copas, David M Lee, Kirstin Rebecca Mitchell, Catherine H Mercer, Pam Sonnenberg, Anne M Johnson, Kaye Wellings
Salivary Testosterone and Sexual Function and Behavior in Men and Women: Findings from the Third British National Survey of Sexual Attitudes and Lifestyles (Natsal-3). Journal of sex research (2021)
Richard L Hooper, Andrew J Copas
Optimal design of cluster randomised trials with continuous recruitment and prospective baseline period. Clinical trials (London, England) 18 (2) (2021)
Catherine H Mercer, Soazig Clifton, Julie Riddell, Clare Tanton, Lily Freeman, Andrew J Copas, Emily Dema, Raquel Boso Perez, Jo Gibbs, Wendy G Macdowall, Dee Menezes, Mary-Clare Ridge, Christopher Bonell, Pam Sonnenberg, Nigel Field, Kirstin Rebecca Mitchell
Impacts of COVID-19 on sexual behaviour in Britain: findings from a large, quasi-representative survey (Natsal-COVID). Sexually transmitted infections 98 (7) (2021)
Richard Gilson, Diarmuid Nugent, Kate Bennett, Caroline J Doré, Macey L Murray, Jade Meadows, Lewis J Haddow, Charles J Lacey, Frank G Sandmann, Mark Jit, Kate Soldan, Michelle Tetlow, Emilia Caverly, Mayura Nathan, Andrew J Copas
Imiquimod versus podophyllotoxin, with and without human papillomavirus vaccine, for anogenital warts: the HIPvac factorial RCT. Health technology assessment (Winchester, England) 24 (47) (2021)
Annabelle South, Nalinie Joharatnam-Hogan, Cara Purvis, Elizabeth C James, Carlos Diaz-Montana, William J Cragg, Conor D Tweed, Archie Macnair, Matthew R Sydes, Claire Snowdon, Katie Gillies, Talia Isaacs, Barbara E Bierer, Andrew J Copas
Testing approaches to sharing trial results with participants: The Show RESPECT cluster randomised, factorial, mixed methods trial. PLoS medicine 18 (10) (2021)
Andrew J Copas, Richard L Hooper
Optimal design of cluster randomized trials allowing unequal allocation of clusters and unequal cluster size between arms. Statistics in medicine 40 (25) (2021)
Andrew J Copas, Sarah Burkill, Fred Conrad, Mick P Couper, Bob Erens
An evaluation of whether propensity score adjustment can remove the self-selection bias inherent to web panel surveys addressing sensitive health behaviours. BMC medical research methodology 20 (1) (2020)
Carina King, Carrie Llewellyn, Maryam Shahmanesh, Charles Abraham, Julia Bailey, Fiona M Burns, Laura Clark, Andrew J Copas, Alison R Howarth, Gwenda Hughes, Catherine H Mercer, Alec Miners, Alex Pollard, Daniel Richardson, Alison J Rodger, Anupama Roy, Richard Gilson
Sexual risk reduction interventions for patients attending sexual health clinics: a mixed-methods feasibility study. Health technology assessment (Winchester, England) 23 (12) (2020)
Andrew J Copas, Richard Hooper
Cluster randomised trials with different numbers of measurements at baseline and endline: Sample size and optimal allocation. Clinical trials (London, England) 17 (1) (2019)
Catherine H Mercer, Soazig Clifton, Gillian Prior, Robert W Aldridge, Christopher Bonell, Andrew J Copas, Nigel Field, Jo Gibbs, Wendy G Macdowall, Kirstin Rebecca Mitchell, Clare Tanton, Nicholas R Thomson, Magnus Unemo, Pam Sonnenberg
Collecting and exploiting data to understand a nation's sexual health needs: Implications for the British National Surveys of Sexual Attitudes and Lifestyles (Natsal). Sexually transmitted infections 95 (3) (2019)
Ibidun Fakoya, Débora Álvarez-Del Arco, Andrew J Copas, Bryan Teixeira, Koen Block, Anne-Francoise Gennotte, Alain Volny-Anne, Janneke P Bil, Giota Touloumi, Julia Del Amo, Fiona M Burns
Factors Associated With Access to HIV Testing and Primary Care Among Migrants Living in Europe: Cross-Sectional Survey. JMIR public health and surveillance 3 (4) (2017)
Ibidun Fakoya, Débora Álvarez-Del Arco, Susana Monge, Andrew J Copas, Anne-Francoise Gennotte, Alain Volny-Anne, Siri Goepel, Giota Touloumi, Maria Prins, Henrique Barros, Cornelia Staehelin, Julia Del Amo, Fiona M Burns
Advancing Migrant Access to Health Services in Europe (AMASE): Protocol for a Cross-sectional Study. JMIR research protocols 5 (2) (2016)
Bob Erens, Sarah M Burkill, Mick P Couper, Frederick Conrad, Soazig Clifton, Clare Tanton, Andrew Phelps, Jessica Datta, Catherine H Mercer, Pam Sonnenberg, Philip Prah, Kirstin Rebecca Mitchell, Kaye Wellings, Anne M Johnson, Andrew J Copas
Nonprobability Web surveys to measure sexual behaviors and attitudes in the general population: a comparison with a probability sample interview survey. Journal of medical Internet research 16 (12) (2014)