This study investigated mental health indicators, substance use, and their relationships, by race/ethnicity. A probability sample of 1,053 students at two California universities self-reported their frequency of substance use and rated their experience with indicators of mental health. One-way analysis of variance (ANOVA), chi-square tests, and multivariate censored regression models were estimated to examine which indicators of mental health were associated with each substance use form by race/ethnicity. Results from the one-way ANOVA and chi-square tests showed differences in substance use prevalence and mental health by race/ethnicity. For example, students who identified as White demonstrate a higher prevalence for every form of substance use in comparison to the Asian, Latino, and "All other" categories. Results from the regression showed, among Whites, inattention was associated with prescription stimulant misuse, and psychological distress was associated with marijuana use. Among Latinos, inattention was associated with cocaine and prescription stimulant use. Among Asians, psychological distress was associated with tobacco use and the misuse of prescription painkillers. Findings highlight the need to ensure subpopulations receive needed services.
To examine the prevalence, characteristics, and utility of ecological theory in explaining prescription stimulant misuse, a probability sample of 499 students from one southern California university (response rate = 94.71%) completed a 100-item paper-based survey. The illicit use of prescription stimulants (IUPS) during college was reported by approximately 21% of students, with approximately 13% of users reporting 10 or more occurrences per academic term. Characteristics of use that were examined suggest a growing trend toward recreational use. We used structural equation modeling to replicate a previously tested ecological model. The number of significant paths in this replication study (i.e., 22) was similar to the number of significant paths in the original study (i.e., 25), and 21 of the significant paths from the original study retained their significance in the replication. Results confirm prescription stimulant misuse remains prevalent, characteristics of the behavior are cause for concern, and ecological theories are a useful tool for explaining the multifaceted nature of IUPS.
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