“…Although research on risk factors for WP initiation among adolescents is nonexistent, the temporal precedence of many predictors identified here fit with earlier longitudinal studies on adolescent cigarette smoking initiation (O’Loughlin et al, 2009; Miller et al, 2006; Morgenstern et al, 2013; Bidstrup et al, 2009; Hiemstra et al, 2011; Scal et al, 2003; Ma et al, 2008; Vitória et al, 2011; Skara et al, 2001; Stanton et al, 2005; Chang et al, 2006; Fujimoto et al, 2012; Wood et al, 2013; Tyas and Pederson, 1998). Research has frequently shown that predisposing factors such as use of other tobacco products is predictive of cigarette initiation (O’Loughlin et al, 2009; Mzayek et al, 2012).…”