“…Intervention duration ranged from one day to three years. Twelve of the studies were pre-post-test design (Ajuwon et al, 2008;Brown et al, 2000;Dizon et al, 2014;Hashmi et al 2013;Hoban et al, 2013;Husum et al, 2003a;Husum et al, 2003b;Kebede et al, 2012;Levine et al, 2005;Makanjuola et al, 2012;Tomatis et al, 2011;vanHeng et al, 2008), 5 were quasi-experimental design (Arreola-Risa et al, 2007;Baig et al, 2008;Bedada et al, 2015;Dodani et al, 2008;Wang et al, 2014), three were Cluster randomized control trials (Goudar et al, 2011;Kulier et al, 2012;Lewin et al, 2011). 2 were cross-sectional design (Kauye et al, 2014;Wee et al, 2011), 1 randomized control trial (Autry et al, 2013), and 1 prospective comparison study (Goodwin et al, 2011).…”