BACKGROUND: The quality of randomized controlled trials (RCTs) in subfertility and their suitability for inclusion in meta-analyses have been assessed in the past and found to be insufficient. Our aim was to assess whether this quality has improved over time, particularly since the publication of the Consolidated Standards of Reporting Trials (CONSORT) statement, and to assess what proportion of trials could be included in the meta-analyses of pregnancy outcomes such as those included in Cochrane Reviews. METHODS: A selection of subfertility trials published in 1990, 1996 and 2002 was collected from the Cochrane Menstrual Disorder and Subfertility Group (MDSG) database. Only trials published in English as full journal articles, claiming to be randomized and reporting on pregnancy outcomes, were included. RESULTS: One hundred and sixty-four trials met our inclusion criteria. Twenty-four (15%) were found not to be randomized, despite claims, and only 10 trials (6%) provided adequate details on the methods of randomization and allocation concealment. Of these, only three had sufficient details extractable to allow for an intention-to-treat analysis of the outcome 'live birth'. CONCLUSIONS: Although an improvement in some subfertility-specific issues was observed, the quality of reporting of RCTs still needs to improve to make them suitable for inclusion in meta-analyses such as those in the Cochrane Library.
BACKGROUND: The quality of randomized controlled trials (RCTs) in subfertility and their suitability for inclusion in meta-analyses have been assessed in the past and found to be insufficient. Our aim was to assess whether this quality has improved over time, particularly since the publication of the Consolidated Standards of Reporting Trials (CONSORT) statement, and to assess what proportion of trials could be included in the meta-analyses of pregnancy outcomes such as those included in Cochrane Reviews. METHODS: A selection of subfertility trials published in 1990, 1996 and 2002 was collected from the Cochrane Menstrual Disorder and Subfertility Group (MDSG) database. Only trials published in English as full journal articles, claiming to be randomized and reporting on pregnancy outcomes, were included. RESULTS: One hundred and sixty-four trials met our inclusion criteria. Twenty-four (15%) were found not to be randomized, despite claims, and only 10 trials (6%) provided adequate details on the methods of randomization and allocation concealment. Of these, only three had sufficient details extractable to allow for an intention-to-treat analysis of the outcome 'live birth'. CONCLUSIONS: Although an improvement in some subfertility-specific issues was observed, the quality of reporting of RCTs still needs to improve to make them suitable for inclusion in meta-analyses such as those in the Cochrane Library.
Authors: Guowei Li; Meha Bhatt; Mei Wang; Lawrence Mbuagbaw; Zainab Samaan; Lehana Thabane Journal: Proc Natl Acad Sci U S A Date: 2018-03-12 Impact factor: 11.205
Authors: Lisa Dapuzzo; Faith E Seitz; William C Dodson; Christina Stetter; Allen R Kunselman; Richard S Legro Journal: Fertil Steril Date: 2011-03-24 Impact factor: 7.329
Authors: Lucy Turner; Larissa Shamseer; Douglas G Altman; Laura Weeks; Jodi Peters; Thilo Kober; Sofia Dias; Kenneth F Schulz; Amy C Plint; David Moher Journal: Cochrane Database Syst Rev Date: 2012-11-14
Authors: Roos M Smits; Rebecca Mackenzie-Proctor; Anusch Yazdani; Marcin T Stankiewicz; Vanessa Jordan; Marian G Showell Journal: Cochrane Database Syst Rev Date: 2019-03-14
Authors: Eric Manheimer; Daniëlle van der Windt; Ke Cheng; Kristen Stafford; Jianping Liu; Jayne Tierney; Lixing Lao; Brian M Berman; Patricia Langenberg; Lex M Bouter Journal: Hum Reprod Update Date: 2013-06-27 Impact factor: 15.610