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Year Number of Results
1903 1
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1938 2
1939 1
1940 1
1941 1
1942 3
1943 1
1944 4
1945 106
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1947 552
1948 567
1949 614
1950 801
1951 964
1952 1077
1953 993
1954 1001
1955 1431
1956 3844
1957 5183
1958 5407
1959 5371
1960 6049
1961 7096
1962 5196
1963 4323
1964 7311
1965 6499
1966 6411
1967 9851
1968 14848
1969 16618
1970 18213
1971 21225
1972 23324
1973 27101
1974 29662
1975 27017
1976 26028
1977 26350
1978 27950
1979 28114
1980 27106
1981 27710
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1986 42532
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1988 51143
1989 61557
1990 68285
1991 73160
1992 79544
1993 87452
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1995 106140
1996 112703
1997 120949
1998 129135
1999 136707
2000 143859
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2002 165787
2003 183804
2004 201331
2005 224851
2006 241650
2007 261897
2008 280186
2009 296849
2010 317396
2011 340048
2012 357544
2013 377304
2014 385830
2015 392308
2016 392851
2017 394650
2018 403591
2019 416396
2020 438600
2021 428192
2022 366989
2023 331871
2024 385859
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2026 32

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Page 1
Mediation Analysis: A Practitioner's Guide.
VanderWeele TJ. VanderWeele TJ. Annu Rev Public Health. 2016;37:17-32. doi: 10.1146/annurev-publhealth-032315-021402. Epub 2015 Nov 30. Annu Rev Public Health. 2016. PMID: 26653405 Review.
ROBINS-I: a tool for assessing risk of bias in non-randomised studies of interventions.
Sterne JA, Hernán MA, Reeves BC, Savović J, Berkman ND, Viswanathan M, Henry D, Altman DG, Ansari MT, Boutron I, Carpenter JR, Chan AW, Churchill R, Deeks JJ, Hróbjartsson A, Kirkham J, Jüni P, Loke YK, Pigott TD, Ramsay CR, Regidor D, Rothstein HR, Sandhu L, Santaguida PL, Schünemann HJ, Shea B, Shrier I, Tugwell P, Turner L, Valentine JC, Waddington H, Waters E, Wells GA, Whiting PF, Higgins JP. Sterne JA, et al. BMJ. 2016 Oct 12;355:i4919. doi: 10.1136/bmj.i4919. BMJ. 2016. PMID: 27733354 Free PMC article.
Stratified randomization for clinical trials.
Kernan WN, Viscoli CM, Makuch RW, Brass LM, Horwitz RI. Kernan WN, et al. J Clin Epidemiol. 1999 Jan;52(1):19-26. doi: 10.1016/s0895-4356(98)00138-3. J Clin Epidemiol. 1999. PMID: 9973070 Free article. Review.
Quality of Big Data in health care.
Sukumar SR, Natarajan R, Ferrell RK. Sukumar SR, et al. Int J Health Care Qual Assur. 2015;28(6):621-34. doi: 10.1108/IJHCQA-07-2014-0080. Int J Health Care Qual Assur. 2015. PMID: 26156435
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