Objective: We considered the utility of National College Health Assessment (NCHA) data relative to other national data for studying college students' cannabis use and binge drinking, and drug policy effects. Participants: Survey data on 18-22-year old college students were drawn from the 2008-2018 NCHA, National Survey on Drug Use and Health…

Objective: The purpose of this study was to examine patterns of concurrent cannabis and other substance use and their differential associations with cannabis-related problems and academic outcomes in college students. Participants: Participants were undergraduate students (N = 263; M age = 19.1 years; 61.2% female) who were eligible if they used…

Current use of vaping products has increased in recent years among youth in the United States. We conducted cross-sectional surveys of vaping product users aged 15-17 in New York in 2017 and 2019 to assess vaping frequency, reported nicotine content of vaping products used, risk perceptions of vaping and openness to vaping cannabis (2019 survey…

The purpose of this quantitative causal-comparative study was to determine the frequency of marijuana use by California university students based on gender and ethnicity. This study was important because marijuana is the most used illicit substance in the United States, and there is limited research regarding the demographic characteristics of…

Objectives: To assess electronic nicotine delivery system (ENDS) use and vaping behaviors and attitudes in college students. Methods: A student-faculty partnership administered a cross-sectional survey to undergraduate students (N 1/4 339) in 2019. Results: 49.8% of students reported using ENDS or vaping in the past 30 days. 48.9% of students who…

Objective: To examine the prevalence and correlates of lifetime cannabis use (i.e., experimental [use 1-5 times] and non-experimental [use [greater than or equal to] 6 times]) in relation to interpersonal trauma (IPT) above and beyond relevant covariates. Participants: A large (n = 9,889) representative sample of college students at an urban…

This review analyzed the effectiveness of mandated substance use interventions in reducing future cannabis or other illicit drug use. Findings indicated that early decreases in cannabis and other drug use are commonly reported among students participating in mandated interventions. The longer time elapses post-intervention, the more likely…

The purpose of this occasional paper is to compare point estimates and trends included in the Monitoring the Future (MTF) Panel Study annual report: "National Data on Substance Use among Adults Ages 19 to 60, 1976-2021" prepared using historical post-stratification weights, with the same point estimates and trends obtained when using MTF…

Monitoring the Future (MTF) is an ongoing research program conducted at the University of Michigan's Institute for Social Research under a series of investigator-initiated, competing research grants from the National Institute on Drug Abuse beginning in 1975. The integrated MTF study includes annual surveys of nationally representative samples of…

Background: Marijuana is the most commonly used illicit drug in the United States. There has been a rapidly changing marijuana policy environment and increased acceptability related to marijuana in the United States. How the changing environment will potentially influence adolescents age of initiation remains unknown. While much of extant…

Objective: We evaluated how applying post-stratification sampling weights to National College Health Assessment II (NCHA-II) data affects estimates of substance use prevalence and tests of medical and recreational marijuana legalization (MML and RML) effects. Participants/Methods: We constructed weights for Fall 2015 and Spring 2016 surveys (n =…

The purpose of this study is to identify the prevalence and factors associated with weapon carrying in Colombian high-school students. A cross-sectional study was designed to analyze this phenomenon among students aged between 13 and 17 years. A sample of 1462 students participated, 18.46% of which reported having planned suicide, 56.16% reported…

Volunteering can serve as a protective factor against substance abuse. Yet, it is unclear whether volunteering in specific community organizations, such as emergency services, promotes or protects against substance use. We aimed to (1) describe community volunteering characteristics among adolescents; (2) investigate differences in the prevalence…

This study theorizes and tests moderators (perceived availability of marijuana and age-group) of the association between adolescents' frequency of marijuana ad exposure and past-year marijuana use. To test this model, I analyzed national survey data from 9,024 American adolescents with hierarchical regression techniques. Results showed that being…

This volume presents new 2021 findings from the U.S. national Monitoring the Future follow-up (panel) study concerning substance use among the nation's college students and adults from ages 19 through 60. We report 2021 prevalence estimates on numerous illicit and licit substances, examine how substance use differs across this age span, and show…