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

Year Number of Results
1999 2
2000 6
2001 10
2002 14
2003 17
2004 16
2005 17
2006 13
2007 23
2008 26
2009 36
2010 35
2011 38
2012 38
2013 38
2014 41
2015 37
2016 53
2017 60
2018 59
2019 58
2020 76
2021 74
2022 41
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724 results
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Page 1
Effectiveness of BNT162b2 and mRNA-1273 covid-19 vaccines against symptomatic SARS-CoV-2 infection and severe covid-19 outcomes in Ontario, Canada: test negative design study.
Chung H, He S, Nasreen S, Sundaram ME, Buchan SA, Wilson SE, Chen B, Calzavara A, Fell DB, Austin PC, Wilson K, Schwartz KL, Brown KA, Gubbay JB, Basta NE, Mahmud SM, Righolt CH, Svenson LW, MacDonald SE, Janjua NZ, Tadrous M, Kwong JC; Canadian Immunization Research Network (CIRN) Provincial Collaborative Network (PCN) Investigators. Chung H, et al. Among authors: austin pc. BMJ. 2021 Aug 20;374:n1943. doi: 10.1136/bmj.n1943. BMJ. 2021. PMID: 34417165 Free PMC article.
Authors' response.
Austin PC, Latouche A. Austin PC, et al. Stat Med. 2020 Sep 10;39(20):2692. doi: 10.1002/sim.8559. Stat Med. 2020. PMID: 32754927 No abstract available.
724 results