Hookah Susceptibility and Transitions Over the First Year of College.

Objective: There has been a growth in popularity of hookah (or waterpipes) among American college students, despite the health risks. This study investigated factors that predict hookah susceptibility and whether hookah susceptibility predicts hookah initiation and continued use.
Method: The study established a cohort of 529 incoming college freshmen (51.6% female) who completed an online survey approximately 1 week before their arrival to a large U.S. university. Students were sent four follow-up surveys throughout the 2016-2017 academic year; 90.5% completed at least one follow-up survey.
Results: A total of 13.2% of the sample had used hookah at baseline and 9.9% initiated hookah use over the course of their freshman year. Among the nonusers who had no hookah susceptibility at baseline, 30.0% came to indicate some susceptibility. Multivariable logistic regression indicated that the personality construct conscientiousness was protective against becoming susceptible, whereas coming from a rural part of the state was a risk factor. Susceptibility predicted both continued use among the baseline ever-users and initiation among the baseline never-users.
Conclusions: These findings highlight the role of susceptibility in the trajectory of hookah use among U.S. college students.