Oral contraceptive pill pretreatment in ovarian stimulation with GnRH antagonists for IVF: a systematic review and meta-analysis George Griesinger, M.D., Christos A. Venetis, M.D., Tanja Marx, Klaus Diedrich, M.D., Ph.D., Basil C. Tarlatzis, M.D., Ph.D., Efstratios M. Kolibianakis, M.D., Ph.D. Fertility and Sterility Volume 90, Issue 4, Pages 1055-1063 (October 2008) DOI: 10.1016/j.fertnstert.2007.07.1354 Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions
Figure 1 Flow diagram for meta-analysis. Identification and selection of publications. Fertility and Sterility 2008 90, 1055-1063DOI: (10.1016/j.fertnstert.2007.07.1354) Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions
Figure 2 Odds ratios and weighted mean differences for the outcomes: (A) ongoing pregnancy per randomized patient; (B) duration of gonadotropin exposure (days); (C) gonadotropin consumption (international units); (D) number of cumulus–oocyte complexes. Abreviations: OCP = oral contraceptive pill; n = number of patients; OR = odds ratio; M = mean; SD = standard deviation; WMD = weighted mean difference; d = days; IU = international units. Fertility and Sterility 2008 90, 1055-1063DOI: (10.1016/j.fertnstert.2007.07.1354) Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions