Table 1: Participant guide questions for semi-structured WTS interview.

Section Example Question Duration* (minutes)
Behavioral skills, intentions Talk about your most recent WTS session. 6
Barriers and opportunities: Experience of smoking waterpipe Tell me about your tobacco smoking experience. 6
Social Community: Influences of tobacco use, types and choice Who in your social community do you belief influences your smoking behavior? Discuss your preferences in smoking tobacco. 15
Observational learning:Efficacy of health warning labels Do you belief health-warning labels are useful to stop people from smoking? 12

*Duration indicates approximate timing.