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

Year Number of Results
1960 1
1962 3
1966 1
1967 4
1968 1
1974 7
1979 2
1983 2
1986 3
1987 10
1988 30
1989 1156
1990 2316
1991 315
1992 476
1993 715
1994 1391
1995 1656
1996 1589
1997 1885
1998 2257
1999 2734
2000 3216
2001 3994
2002 4624
2003 5187
2004 5600
2005 5653
2006 6119
2007 5860
2008 6611
2009 7279
2010 7570
2011 7717
2012 7833
2013 8130
2014 7862
2015 8156
2016 8553
2017 8900
2018 9431
2019 5912
2020 279
Text availability
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Article type
Publication date

Search Results

139,745 results
Results by year
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Page 1
Pragmatic Trials.
Ford I, Norrie J. Ford I, et al. N Engl J Med. 2016 Aug 4;375(5):454-63. doi: 10.1056/NEJMra1510059. N Engl J Med. 2016. PMID: 27518663 Free article. No abstract available.
John Henry Gaddum's 1940 guidance on controlled clinical trials.
Marson Smith P, Colquhoun D, Chalmers I. Marson Smith P, et al. J R Soc Med. 2019 Sep;112(9):394-400. doi: 10.1177/0141076819870674. J R Soc Med. 2019. PMID: 31496349 Free PMC article. No abstract available.
The Primary Outcome Fails - What Next?
Pocock SJ, Stone GW. Pocock SJ, et al. N Engl J Med. 2016 Sep 1;375(9):861-70. doi: 10.1056/NEJMra1510064. N Engl J Med. 2016. PMID: 27579636 Free article. Review. No abstract available.
139,745 results
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