“…Data on effect estimates (HR, RR, RaR, and OR) of pregnancy and live birth were extracted from the remaining 18 articles, all of which were published in peer-reviewed journals between 2004 and 2018 (Byrne et al, 2004;Hodgson et al, 2007;Syse et al, 2007;Madanat et al, 2008;Cvancarova et al, 2009;Reulen et al, 2009;Pivetta et al, 2011;Stensheim et al, 2011;van der Kaaij et al, 2012;Baxter et al, 2013;Dillon et al, 2013;Hartman et al, 2013;Brämswig et al, 2015;Chow et al, 2016;Armuand et al, 2017;Anderson et al, 2018a;2018b;Thouvenin-Doulet et al, 2018). Details of the characteristics of the included studies are presented in TABLE 1.…”