“…Some articles reported anxiety and coping style did not affect the process of smoking cessation (Hitsman, Borrelli, McChargue, Spring, & Niaura, 2003;Piper et al, 2010;Siqueira, Rolnitzky, & Rickert, 2001). Second, the psychological factors were not independent, and they might have a strong internal association (Varescon et al, 2013;Webb Hooper, Baker, & McNutt, 2013) so multicollinearity was often detected in multiple regression. Finally, some psychological factors cause different effects to smoking under different psychological conditions (Kerr, Woods, Knussen, Watson, & Hunter, 2013;Leventhal et al, 2012).…”