OBJECTIVE: Motor vehicle crashes involving alcohol are a major contributor to morbidity and mortality among college students in the United States. This study evaluates the effect on drinking and driving outcomes of the "A Matter of Degree" program, a campus-community coalition initiative to reduce college binge drinking. METHODS: We used a quasi-experimental longitudinal study design that compared student responses at 10 colleges participating in the program and students attending 32 similar colleges that did not participate in the program. We also divided the program sites into two groups of five according to their level of program implementation and compared each with the non-program colleges. We examined driving after any alcohol consumption and driving after five or more drinks among drinkers who drove one or more times a week per month and riding with a high or drunk driver among all students at these colleges beginning in 1997 through 2001. Outcomes were based on data collected from repeated cross-sectional surveys using the Harvard School of Public Health College Alcohol Study. Analyses were conducted using MLwiN multilevel statistical software. RESULTS: We found significant reductions in driving after drinking, driving after five or more drinks and riding with a high or drunk driver at the program colleges relative to the comparison colleges. Further analyses indicated that these reductions among the AMOD program colleges occurred at the sites with high program implementation relative to comparison sites, while no statistically significant change was noted at the program sites with low implementation. The program effect on the two drinking and driving outcomes appeared to be mediated by frequent binge drinking, while significant decline in the riding with an intoxicated driver outcome was not mediated by the individual's drinking. CONCLUSIONS: Campus-community based environmental alcohol prevention is a promising approach for reducing alcohol-impaired motor vehicle crashes among this population.
Publications
2005
STUDY OBJECTIVE: To test whether college youth smoking risks are independently associated with community patterns of alcohol availability and control. DESIGN: Hierarchical multilevel multivariable modelling of cross sectional survey data. Outcomes included self reported current (past 30 day) cigarette smoking and heavy episodic (binge) drinking. SETTING: 120 nationally representative US colleges. PARTICIPANTS: 10 924 randomly selected students. MAIN RESULTS: Individual risks for smoking and binge drinking are independently associated with community patterns of alcohol availability, policy enforcement and control over and above individual perceptions about these factors, student and college characteristics, and school binge drinking rates. Youth exposed to high levels of alcohol availability are at higher risk of smoking (OR 3.61, 95% CI 1.75, 7.44) and binge drinking (OR 4.22, 95% CI 2.25, 7.93) than youth not so exposed; youth exposed to strongly enforced alcohol policy environments are at lower risk for smoking (OR 0.30, 95% CI 0.16, 0.57) and binge drinking (OR 0.17, 95% CI 0.10, 0.31) than youth not so exposed; youth exposed to communities with strong parental controls are at lower risk for smoking (OR 0.05, 95% CI 0.01, 0.23) and binge drinking (OR 0.06, 95% CI 0.01, 0.21) than youth not so exposed. Individual risks related to environmental exposures differ for youth with varying perceptions about alcohol availability and policy control. CONCLUSIONS: Drinking environments in US college communities comprise strong independent risks for smoking. Smoking prevention models should be tested that include environmental drinking prevention strategies tailored to underlying perceptions and experiences of college youth.
STUDY OBJECTIVE: To examine associations between social capital and individual risk for alcohol abuse and harms and identify protective effect mechanisms. DESIGN: Multilevel multivariate analysis with individual level data from a national panel survey of drinking and a contextual measure of social capital reflecting college mean aggregate reports of student volunteerism. Outcomes include heavy episodic (binge) drinking, frequent drinking, frequent drunkenness, diagnosable alcohol abuse, intentional drunkenness, acquisition of binge drinking, harms, secondhand effects from others' drinking. SETTING: United States, 119 four year colleges. PARTICIPANTS: Representative samples of youth ages 18-24 surveyed in 1997 and 1999 using an anonymous mailed questionnaire (total n = 27 687). MAIN RESULTS: Students from colleges with higher levels of social capital reported reduced risks for binge drinking (adjusted OR 0.38, 95% CI 0.20 to 0.69, p = 0.002), frequent drunkenness (adjusted OR 0.58, 95% CI 0.34 to 0.98, p = 0.04), acquisition of binge drinking in college (adjusted OR 0.48, 95% CI 0.24 to 0.95, p = 0.03), and alcohol abuse (adjusted OR 0.55, 95% CI 0.34 to 0.91, p = 0.02) in multilevel multivariate analyses that controlled for individual volunteering, the measure on which social capital was based. Higher levels of social capital protected against multiple drinking related harms (adjusted OR 0.51, 95% CI 0.29 to 0.90, p = 0.02) and secondhand drinking effects (adjusted OR, 0.30, 95% CI 0.16 to 0.58, p = 0.0003). Significant cross level interactions exist between fraternity/sorority membership and social capital for measures of risky drinking. Harm reduction primarily reflects consumption modification. CONCLUSIONS: Social capital exerts strong protective effects on alcohol abuse and harm in college including among high risk students.
OBJECTIVE: The purpose of this study was to estimate the risk of depressive symptoms, DSM-IV alcohol abuse and their comorbidity among children of problem drinkers (COPDs) in college and the effects of parent and child gender and parent drinking status on outcomes and on COPDs' treatment utilization. METHOD: The study population was a nationally representative sample of 27,430 college students from 119 4-year colleges who completed survey questionnaires for the Harvard College Alcohol Study in 1997 and 1999. Logistic regression was used to estimate the psychiatric outcomes and patterns of treatment/counseling. RESULTS: COPDs who reported that their parents were active problem drinkers were at increased risk of depressive symptoms, DSM-IV alcohol abuse and their comorbidity. Female children of active problem drinkers (CAPDs) were at increased risk of depressive symptoms (odds ratio [OR] = 1.57,p < .01) and comorbidity of depressive symptoms and alcohol abuse (OR = 2.09, p < .01). Male CAPDs were at risk of depressive symptoms (OR = 1.69, p < .05) only. Stratified analysis by both parent and child gender revealed that depressive symptoms among female COPDs were affected by both paternal and maternal drinking, whereas among their male counterparts depressive symptoms were present only when the affected parent was the father. Male children of recovered problem drinkers were more likely to seek and receive psychiatric treatment/counseling than male CAPDs. CONCLUSIONS: The psychiatric risk of COPDs varied by respondent and parent gender, and by whether the affected parent was reported to be actively disordered or in recovery. The results highlight the importance of early and gender-specific interventions for COPDs.
BACKGROUND: In US colleges, alcohol and tobacco pose substantial health risks but little is known about their co-occurrence, limiting development and use of appropriately targeted prevention efforts. METHODS: Data from the 2001 HSPH College Alcohol Study (student n = 10,924; college n = 120) were analyzed using multivariate logistic regression. Co-occurring smoking/drinking risks were examined in aggregate, by gender, and by age of onset of regular drinking and smoking across 10 measures of drinking style, three categories of transitional drinking behavior, and by treatment behavior. RESULTS: Over 98% of current smokers drink; a fraction (<1%) of lifetime and 7% of past year alcohol abstainers smoke. Across drinking pattern measures, 44-59% of drinkers smoke. Co-occurrence risks are greatest among youth reporting high total alcohol consumption (adjusted OR 4.21, p < 0.0001), drinking problems (adjusted OR 3.31, p < 0.0001) or symptoms of diagnosable alcohol abuse (adjusted OR 3.02, p < 0.0001). Risks are sharply elevated among students who self-medicate for drinking problems and do not seek/receive help (adjusted OR 1.87, p < 0.0001), and those reporting symptoms of diagnosable alcohol abuse who may or may not seek/receive help (adjusted OR 2.67, p < 0.01 and 2.96, p < 0.01, respectively). Females and students reporting early adolescent onset of regular smoking are at greatest risk. CONCLUSIONS: Virtually all college smokers drink, and smoking and drinking are powerfully interrelated across drinking measures. Efficiency argues for jointly targeting both behaviors and developing interventions tailored to the special vulnerabilities of young women, students experiencing difficulties adjusting to college, and students reporting early onset of regular smoking.
2004
OBJECTIVES: To examine the effects of a multisite environmental prevention initiative, the "A Matter of Degree" (AMOD) program, on student heavy alcohol consumption and resultant harms at ten colleges. METHODS: A quasi-experimental longitudinal analysis of alcohol consumption and harms was employed, using repeated cross-sectional survey data from the Harvard School of Public Health College Alcohol Study (CAS). Areas examined included seven measures of alcohol consumption, thirteen measures of alcohol-related harms, and eight measures of secondhand effects of alcohol use by others. Comparisons were conducted on self-reported behavior of students for the ten AMOD sites in aggregate and by level of program implementation, with students at 32 comparison colleges in the CAS, for each outcome. RESULTS: No statistically significant change was found in the overall ten-school AMOD program for outcome measures of interest from baseline (1997) to follow-up (2001). However, there was variation in the degree of environmental program development within AMOD during the intervention period. A pattern of statistically significant decreases in alcohol consumption, alcohol-related harms, and secondhand effects was observed, reflecting minor to more substantial changes across measures among students at the five program colleges that most closely implemented the AMOD model of environmental change. No similar pattern was observed for the low implementation sites or at 32 comparison colleges. CONCLUSIONS: While there was no change in the ten AMOD schools in study measures, significant although small improvements in alcohol consumption and related harms at colleges were observed among students at the five AMOD sites that most closely implemented the environmental model. Fidelity to a program model conceptualized around changing alcohol-related policies, marketing, and promotions may reduce college student alcohol consumption and related harms. Further research is needed over the full course of the AMOD program to identify critical intervention components and elucidate pathways by which effects are realized.
The purpose of this article was to describe patterns of poor mental health/depression (PMHD) in a national sample of college students and the relationships among PMHD, alcohol consumption, harm, and abuse. Responses to mailed questionnaires completed by a random sample of 27,409 students at 119 colleges were analyzed using logistic regression. Nationally, 4.8% of students reported PMHD. The average college prevalence was 5.01% (range, 0.68% to 13.23%). Students with PMHD were more likely than their peers to be female, nonwhite, and from low socioeconomic status families; less likely to report never drinking; as likely to report frequent, heavy, and heavy episodic drinking; and more likely to report drinking to get drunk. Students with PMHD-especially females-were more likely to report drinking-related harms and alcohol abuse. College is a critical context for studying youth mental health. The interrelationship of mental health problems and their clustering by group and college are important considerations for prevention and treatment.
Considerable attention has been paid to heavy episodic or "binge" drinking among college youth in the United States. Despite widespread use, the binge measure is perceived by some as a low intervention threshold. We use data from the Harvard School of Public Health College Alcohol Study (n = 49,163) to describe patterns of consumption and harms along a continuum including the binge measure to demonstrate the validity of the binge threshold and prevention paradox in college. While the heaviest drinkers are at greatest risk for harm, they are relatively few and generate proportionately small amounts of all drinking-harms. The risk of harms is not zero among lower level drinkers in college. Because they are numerous, they account for the majority of harms. This paradoxical pattern suggests we moderate consumption among the majority using environmental approaches, the efficacy of which are described using case study data from a national prevention demonstration. Implications for prevention policy, programming, and media advocacy are discussed.
2003
PURPOSE: 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.