title: Smoking trajectories across high school: sensation seeking and Hookah use.
abstract: BACKGROUND
  This study investigated the associations of trajectories of cigarette smoking over the high school years with the prior development of childhood sensation seeking and the subsequent use of cigarettes and hookah at age 20/21.
  
  
  METHODS
  Participants (N = 963) were members of a cohort-sequential longitudinal study, the Oregon Youth Substance Use Project. Sensation seeking was assessed across 4th-8th grades and cigarette smoking was assessed across 9th-12th grades. Cigarette and hookah use was assessed at age 20/21 for 684 of the 963 participants.
  
  
  RESULTS
  Four trajectory classes were identified: Stable High Smokers (6%), Rapid Escalators (8%), Experimenters (15%), and Stable Nonsmokers or very occasional smokers (71%). Membership in any smoker class versus nonsmokers was predicted by initial level and growth of sensation seeking. At age 20/21, there was a positive association between smoking and hookah use for Nonsmokers and Experimenters in high school, whereas this association was not significant for Stable High Smokers or Rapid Escalators.
  
  
  CONCLUSIONS
  Level and rate of growth of sensation seeking are risk factors for adolescent smoking during high school (Stable High Smokers, Rapid Escalators, and Experimenters), suggesting the need for interventions to reduce the rate of increase in childhood sensation seeking. For those who were not already established smokers by the end of high school, hookah use may have served as a gateway to smoking.
authors: Oregon Research Institute, Eugene, OR 97403-2536, USA. sarah@ori.org
authors: Sarah E
authors: SE
authors: Hampson
authors: Elizabeth
authors: E
authors: Tildesley
authors: Judy A
authors: JA
authors: Andrews
authors: Maureen
authors: M
authors: Barckley
authors: Missy
authors: M
authors: Peterson
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology* / Q000523:psychology*