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

Year Number of Results
1979 1
1983 1
1984 5
1986 1
1988 2
1989 3
1990 3
1991 3
1992 7
1993 7
1994 5
1995 7
1996 8
1997 2
1998 14
1999 9
2000 14
2001 15
2002 21
2003 26
2004 13
2005 23
2006 21
2007 21
2008 43
2009 42
2010 51
2011 37
2012 39
2013 72
2014 45
2015 59
2016 59
2017 56
2018 46
2019 43
2020 66
2021 74
2022 57
2023 49
2024 34

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Page 1
SPIRIT 2013 statement: defining standard protocol items for clinical trials.
Chan AW, Tetzlaff JM, Altman DG, Laupacis A, Gøtzsche PC, Krleža-Jerić K, Hróbjartsson A, Mann H, Dickersin K, Berlin JA, Doré CJ, Parulekar WR, Summerskill WS, Groves T, Schulz KF, Sox HC, Rockhold FW, Rennie D, Moher D. Chan AW, et al. Ann Intern Med. 2013 Feb 5;158(3):200-7. doi: 10.7326/0003-4819-158-3-201302050-00583. Ann Intern Med. 2013. PMID: 23295957 Free PMC article.
1,013 results