title: Drug exposure opportunities and use patterns among college students: results of a longitudinal prospective cohort study.
abstract: Underage drinking and drug use among college students are major public health concerns, yet few studies have examined these behaviors and their associated risk factors and consequences prospectively. This paper describes the sampling and recruitment methods of a longitudinal study of 1253 college students at a large, mid-Atlantic university. Incoming first-year students were screened during the unique window between high school and college in order to oversample drug users for longitudinal follow-up. Intensive recruitment strategies yielded a 95% cumulative response rate in annual interviews and semiannual surveys. The authors report preliminary results on exposure opportunity, lifetime prevalence, initiation, continuation, and cessation of substance use for alcohol, tobacco, and 10 illicit and prescription drugs during the first 2 years of college. Findings suggest that although some substance use represents a continuation of patterns initiated in high school, exposure opportunity and initiation of substance use frequently occur in college. Implications for prevention and early intervention are discussed.
authors.affiliation: Center for Substance Abuse Research (CESAR), University of Maryland College Park, College Park, MD 20740, USA. aarria@cesar.umd.edu
authors.forename: Amelia M
authors.initials: AM
authors.lastname: Arria
authors.forename: Kimberly M
authors.initials: KM
authors.lastname: Caldeira
authors.forename: Kevin E
authors.initials: KE
authors.lastname: O'Grady
authors.forename: Kathryn B
authors.initials: KB
authors.lastname: Vincent
authors.forename: Dawn B
authors.initials: DB
authors.lastname: Fitzelle
authors.forename: Erin P
authors.initials: EP
authors.lastname: Johnson
authors.forename: Eric D
authors.initials: ED
authors.lastname: Wish
mesh_terms: D000124:Achievement; D000293:Adolescent; D000435:Alcoholic Intoxication / Q000453:epidemiology*; D000437:Alcoholism / Q000453:epidemiology*; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D013287:Illicit Drugs; D008137:Longitudinal Studies; D008297:Male; D008403:Mass Screening; D008873:Mid-Atlantic Region; D055553:Prescription Drugs; D011446:Prospective Studies; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*; D013334:Students / Q000523:psychology / Q000706:statistics & numerical data*; D019966:Substance-Related Disorders / Q000453:epidemiology*; D055815:Young Adult
chemical_list: D013287:Illicit Drugs; D055553:Prescription Drugs