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

Year Number of Results
1950 1
1951 2
1952 3
1953 2
1954 5
1955 5
1956 9
1957 10
1958 3
1959 3
1960 4
1961 1
1962 2
1963 5
1964 8
1965 13
1966 4
1967 12
1968 10
1969 10
1970 18
1971 20
1972 14
1973 22
1974 17
1975 16
1976 10
1977 15
1978 11
1979 9
1980 6
1981 4
1982 6
1983 15
1984 10
1985 9
1986 10
1987 4
1988 10
1989 11
1990 16
1991 11
1992 12
1993 13
1994 10
1995 11
1996 20
1997 13
1998 25
1999 16
2000 34
2001 33
2002 52
2003 38
2004 29
2005 40
2006 35
2007 32
2008 45
2009 27
2010 49
2011 38
2012 48
2013 39
2014 44
2015 29
2016 42
2017 37
2018 39
2019 33
2020 48
2021 40
2022 45
2023 42
2024 50

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1,408 results

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Page 1
The Cochrane Collaboration's tool for assessing risk of bias in randomised trials.
Higgins JP, Altman DG, Gøtzsche PC, Jüni P, Moher D, Oxman AD, Savovic J, Schulz KF, Weeks L, Sterne JA; Cochrane Bias Methods Group; Cochrane Statistical Methods Group. Higgins JP, et al. Among authors: schulz kf. BMJ. 2011 Oct 18;343:d5928. doi: 10.1136/bmj.d5928. BMJ. 2011. PMID: 22008217 Free PMC article.
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. Among authors: schulz kf. 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.
Cohort studies: marching towards outcomes.
Grimes DA, Schulz KF. Grimes DA, et al. Among authors: schulz kf. Lancet. 2002 Jan 26;359(9303):341-5. doi: 10.1016/S0140-6736(02)07500-1. Lancet. 2002. PMID: 11830217
Descriptive studies: what they can and cannot do.
Grimes DA, Schulz KF. Grimes DA, et al. Among authors: schulz kf. Lancet. 2002 Jan 12;359(9301):145-9. doi: 10.1016/S0140-6736(02)07373-7. Lancet. 2002. PMID: 11809274 Review.
1,408 results