Introduction: Tabaco related death is estimated at 6 million people worldwide and it is portrayed to increase to 8 million in 2030. In ASEAN alone, there were approximately 121 million adult smokers in 2013, in which 50% of them were Indonesian. In Indonesia, it is illegal to sell cigarettes to people under 18 years old, but this regulation has weak field implementation and the number of under-age smokers is considerably high in Indonesia. Therefore, this study aimed to analyse the effects of knowledge and perception with smoking intention and behaviour among santris at Asrama Perguruan Islam (API) Islamic boarding school.
Methods: A mix method study with sequential explanatory approach was conducted API Islamic boarding school in two phases namely qualitatively and quantitatively. 380 santris were enrolled in this study with interviewees for quantitative study was divided into three groups: santri who < 17 years old, santri who > 17 years old, and housekeepers.
Results: The results showed that the knowledge significantly affected the smoking behaviour while had no influence toward smoking intention. On the other hand, no significant association was observed between perceptions with smoking intention while it significantly affected the smoking behaviour.Â
Conclusion: It can be concluded that knowledge and perception were importance factors that influence smoking behaviour but had no effects toward smoking intention.