title: Taking up binge drinking in college: the influences of person, social group, and environment.
abstract: OBJECTIVE
  To identify person, social group, and environmental factors associated with uptake of binge drinking among a national sample of college students.
  
  
  METHODS
  Using self-reported responses of students in the 1999 Harvard School of Public Health College Alcohol Study (CAS), we regressed conceptually important predictors of binge drinking onto a dichotomized variable describing uptake in the freshman year. This was a random sample of full-time undergraduates provided by the registrar at each participant school (n = 119). For this study, we analyzed data describing a subset of the total sample comprising first year students aged < or =19 years, excluding transfers (n = 1894). The student CAS is a 20-page voluntary, anonymous mailed questionnaire containing student reports about their alcohol and substance use, school activities, and background characteristics. Analyses included univariate and multivariate logistic regression adjusting for school response rate and using the Generalized Estimating Equations (GEE) in the Statistical Analysis Software package to handle the within-college clustering owing to the sampling scheme.
  
  
  RESULTS
  College students who reported that they were exposed to "wet" environments were more likely to engage in binge drinking than were their peers without similar exposures. Wet environments included social, residential, and market surroundings in which drinking is prevalent and alcohol cheap and easily accessed. Findings held up in multivariate analyses that included variables describing person and social group characteristics. Students who picked up binge drinking in college also were more likely than their peers to report inflated definitions of binge drinking and more permissive attitudes about appropriate ages for legal consumption.
  
  
  CONCLUSIONS
  Binge drinking can either be acquired or avoided in college among students who report they did not binge drink in high school. Reducing college binge uptake may require efforts to limit access/availability, control cheap prices, and maximize substance free environments and associations.
authors.affiliation: Department of Health and Social Behavior, Harvard School of Public Health, Landmark Center, Boston, Massachusetts 02215, USA. ewitzma@hsph.harvard.edu
authors.forename: Elissa R
authors.initials: ER
authors.lastname: Weitzman
authors.forename: Toben F
authors.initials: TF
authors.lastname: Nelson
authors.forename: Henry
authors.initials: H
authors.lastname: Wechsler
mesh_terms: D000293:Adolescent; D000437:Alcoholism / Q000453:epidemiology* / Q000523:psychology; D003710:Demography; D005260:Female; D006801:Humans; D008297:Male; D015999:Multivariate Analysis; D010379:Peer Group; D012189:Retrospective Studies; D012931:Social Environment; D012959:Socioeconomic Factors; D013334:Students / Q000523:psychology*; D011795:Surveys and Questionnaires; D014495:Universities