“…Of the few studies on adolescents, most, if not all, have been based on Western (e.g., Canada, the US and UK) or Middle East populations (Akl et al 2015;Zyoud et al 2014). Cigarette smoking is the most important predictor of waterpipe use among adolescents (Barnett et al 2009;Jawad et al 2015a, b;Minaker et al 2015;Palamar et al 2014;Smith et al 2011;Weglicki et al 2008). Other factors include male sex (Barnett et al 2009;Jawad et al 2015a;Minaker et al 2015;Palamar et al 2014), older age or higher grade level (Barnett et al 2009;Jawad et al 2015b;Smith et al 2011;Weglicki et al 2008), peer smoking (Jawad et al 2013(Jawad et al , 2015aRoohafza et al 2011), parental smoking (Jawad et al 2013(Jawad et al , 2015a, alcohol consumption (Chan et al 2011;Czoli et al 2013;Palamar et al 2014), marijuana use (Chan et al 2011;Czoli et al 2013;Palamar et al 2014), other tobacco product use (Amrock et al 2014;Jawad et al 2013), and positive attitudes toward smoking (Barnett et al 2009).…”