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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 15
2019 16
2020 14
2021 18
2022 27
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Search Results

300 results
Results by year
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Page 1
Vaccine effectiveness of the first dose of ChAdOx1 nCoV-19 and BNT162b2 against SARS-CoV-2 infection in residents of long-term care facilities in England (VIVALDI): a prospective cohort study.
Shrotri M, Krutikov M, Palmer T, Giddings R, Azmi B, Subbarao S, Fuller C, Irwin-Singer A, Davies D, Tut G, Lopez Bernal J, Moss P, Hayward A, Copas A, Shallcross L. Shrotri M, et al. Among authors: copas a. Lancet Infect Dis. 2021 Nov;21(11):1529-1538. doi: 10.1016/S1473-3099(21)00289-9. Epub 2021 Jun 23. Lancet Infect Dis. 2021. PMID: 34174193 Free PMC article.
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.
Evaluation of respondent-driven sampling.
McCreesh N, Frost SD, Seeley J, Katongole J, Tarsh MN, Ndunguse R, Jichi F, Lunel NL, Maher D, Johnston LG, Sonnenberg P, Copas AJ, Hayes RJ, White RG. McCreesh N, et al. Among authors: copas aj. Epidemiology. 2012 Jan;23(1):138-47. doi: 10.1097/EDE.0b013e31823ac17c. Epidemiology. 2012. PMID: 22157309 Free PMC article.
Imiquimod versus podophyllotoxin, with and without human papillomavirus vaccine, for anogenital warts: the HIPvac factorial RCT.
Gilson R, Nugent D, Bennett K, Doré CJ, Murray ML, Meadows J, Haddow LJ, Lacey C, Sandmann F, Jit M, Soldan K, Tetlow M, Caverly E, Nathan M, Copas AJ. Gilson R, et al. Among authors: copas aj. Health Technol Assess. 2020 Sep;24(47):1-86. doi: 10.3310/hta24470. Health Technol Assess. 2020. PMID: 32975189 Free PMC article. Clinical Trial.
How important is randomisation in a stepped wedge trial?
Hargreaves JR, Prost A, Fielding KL, Copas AJ. Hargreaves JR, et al. Among authors: copas aj. Trials. 2015 Aug 16;16:359. doi: 10.1186/s13063-015-0872-1. Trials. 2015. PMID: 26275907 Free PMC article.
A Quantitative Process for Enhancing End of Phase 2 Decisions.
Sabin T, Matcham J, Bray S, Copas A, Parmar MK. Sabin T, et al. Among authors: copas a. Stat Biopharm Res. 2014 Jan;6(1):67-77. doi: 10.1080/19466315.2013.852617. Epub 2014 Feb 1. Stat Biopharm Res. 2014. PMID: 24683441 Free PMC article.
300 results