title: The proximal association between smoking and alcohol use among first year college students.
abstract: OBJECTIVE
  This study was undertaken to evaluate the association between patterns of day-to-day smoking and drinking among first year college students.
  
  
  METHODS
  Using 210 days of weekly time-line follow-back diary data, the authors examined the within-person relationships between smoking and drinking. Bivariate time series procedures were utilized.
  
  
  RESULTS
  Findings revealed a high degree of significant cross-correlations between smoking and drinking in which the amount of use of one substance could be predicted by current, as well as past and future use of the other. For the majority of participants, smoking and drinking were positively associated with the alternate behavior. The most common pattern of prediction for individuals was within day (i.e. synchronous correlations). When examining rates of individuals showing significant cross-correlations according to their level of either smoking or drinking, those smoking less than one cigarette on average per day were found to be less likely to demonstrate a synchronous cross-correlation between the two behaviors than those smoking at higher rates. No significant association was found between level of drinking and the rate of significant synchronous cross-correlations between smoking and drinking.
  
  
  CONCLUSIONS
  Reports of daily behavior over long periods of time have the potential to provide insight into the more proximal influences of smoking and alcohol use on one another. Future research is needed to establish the specific factors (i.e. third variables) and related mechanisms that may drive both behaviors.
authors: Wesleyan University, Department of Psychology, 207 High Street, Middletown, CT 06459, USA. ldierker@wesleyan.edu
authors: Lisa
authors: L
authors: Dierker
authors: Elizabeth
authors: E
authors: Lloyd-Richardson
authors: Marilyn
authors: M
authors: Stolar
authors: Brian
authors: B
authors: Flay
authors: Stephen
authors: S
authors: Tiffany
authors: Linda
authors: L
authors: Collins
authors: Steffani
authors: S
authors: Bailey
authors: Mark
authors: M
authors: Nichter
authors: Mimi
authors: M
authors: Nichter
authors: Richard
authors: R
authors: Clayton
mesh_terms: D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008499:Medical Records; D009042:Motivation; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology* / Q000523:psychology; D013223:Statistics as Topic; D013334:Students / Q000523:psychology / Q000706:statistics & numerical data*