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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Int J Tuberc Lung Dis. 2015 Apr;19(4):481–487. doi: 10.5588/ijtld.14.0869

Figure 1.

Figure 1

Adjusted probabilities* of initiating cigarette smoking for waterpipe-only smokers compared with never smokers in a school-based sample of adolescents in Irbid, Jordan, 2008–2011 (n = 1454). Note: probabilities were obtained from the adjusted grouped-time survival analysis. Modeling included sex; age; pocket money; educational level of parents; whether parents, siblings, friends, teacher smoked cigarettes; relation with parents, siblings, teachers and classmates; intention to smoke; refusal of self-efficacy; beliefs (cigarette smoker has more friends, cigarette smoking is more attractive, cigarette smoking reduces weight, cigarette smoking harms health, easy to quit cigarette after smoking a year); intention to smoke next year; and whether the student has seen advertisements promoting or warning against cigarette smoking or actor smoking in the media, and warning label on cigarette packs.* Based on dose-response linear trend analysis.