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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1995 1
1996 2
1997 3
1998 3
1999 1
2000 2
2001 9
2002 5
2003 7
2004 5
2005 15
2006 16
2007 11
2008 9
2009 12
2010 10
2011 13
2012 11
2013 19
2014 22
2015 34
2016 22
2017 16
2018 16
2019 17
2020 14
2021 19
2022 36
2023 27
2024 25
2025 2

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355 results

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Page 1
Sample size calculation for a stepped wedge trial.
Baio G, Copas A, Ambler G, Hargreaves J, Beard E, Omar RZ. Baio G, et al. Among authors: copas a. Trials. 2015 Aug 17;16:354. doi: 10.1186/s13063-015-0840-9. Trials. 2015. PMID: 26282553 Free PMC article. Review.
How should a cluster randomized trial be analyzed?
Billot L, Copas A, Leyrat C, Forbes A, Turner EL. Billot L, et al. Among authors: copas a. J Epidemiol Popul Health. 2024 Feb;72(1):202196. doi: 10.1016/j.jeph.2024.202196. Epub 2024 Feb 10. J Epidemiol Popul Health. 2024. PMID: 38477477 Free PMC article.
Collecting and exploiting data to understand a nation's sexual health needs: Implications for the British National Surveys of Sexual Attitudes and Lifestyles (Natsal).
Mercer CH, Clifton S, Prior G, Aldridge RW, Bonell C, Copas AJ, Field N, Gibbs J, Macdowall W, Mitchell KR, Tanton C, Thomson N, Unemo M, Sonnenberg P. Mercer CH, et al. Among authors: copas aj. Sex Transm Infect. 2019 May;95(3):159-161. doi: 10.1136/sextrans-2018-053571. Epub 2019 Mar 19. Sex Transm Infect. 2019. PMID: 30890634 Free PMC article. No abstract available.
Exploring different objectives in non-inferiority trials.
Tweed CD, Quartagno M, Clements MN, Turner RM, Nunn AJ, Dunn DT, White IR, Copas AJ. Tweed CD, et al. Among authors: copas aj. BMJ. 2024 Jun 17;385:e078000. doi: 10.1136/bmj-2023-078000. BMJ. 2024. PMID: 38886014 Free PMC article.
Prevalence of non-communicable diseases among household contacts of people with tuberculosis: A systematic review and individual participant data meta-analysis.
Hamada Y, Quartagno M, Malik F, Ntshamane K, Tisler A, Gaikwad S, Acuna-Villaorduna C, Bhavani PK, Alisjahbana B, Ronacher K, Apriani L, Becerra M, Chu AL, Creswell J, Diaz G, Ferro BE, Galea JT, Grandjean L, Grewal HMS, Gupta A, Jones-López EC, Kleynhans L, Lecca L, MacPherson P, Murray M, Marín D, Restrepo BI, Shivakumar SVBY, Shu E, Sivakumaran D, Vo LNQ, Webb EL, Copas A, Abubakar I, Rangaka MX. Hamada Y, et al. Among authors: copas a. Trop Med Int Health. 2024 Sep;29(9):768-780. doi: 10.1111/tmi.14038. Epub 2024 Jul 27. Trop Med Int Health. 2024. PMID: 39073229 Review.
A pilot cross-sectional study of non-communicable diseases in TB household contacts.
Hamada Y, Lugendo A, Ntshiqa T, Kubeka G, Lalashowi JM, Mwastaula S, Ntshamane K, Sabi I, Wilson S, Copas A, Velen K, Ntinginya NE, Minja LT, Abubakar I, Charalambous S, Rangaka MX. Hamada Y, et al. Among authors: copas a. IJTLD Open. 2024 Apr 1;1(4):154-159. doi: 10.5588/ijtldopen.23.0579. eCollection 2024 Apr. IJTLD Open. 2024. PMID: 38988408 Free PMC article.
Prevalence of Curable Sexually Transmitted Infections in a Population-Representative Sample of Young Adults in a High HIV Incidence Area in South Africa.
Jarolimova J, Chidumwa G, Chimbindi N, Okesola N, Dreyer J, Smit T, Seeley J, Harling G, Copas A, Baisley K, Shahmanesh M, Herbst C, McGrath N, Zuma T, Khoza T, Behuhuma N, Bassett IV, Sherr L; Isisekelo Research Group. Jarolimova J, et al. Among authors: copas a. Sex Transm Dis. 2023 Dec 1;50(12):796-803. doi: 10.1097/OLQ.0000000000001871. Epub 2023 Oct 8. Sex Transm Dis. 2023. PMID: 37944161 Free PMC article. Clinical Trial.
355 results