Factors Associated With Marijuana use and Problems Among College Students in Colorado.

BACKGROUND: Past studies have shown that heavy marijuana use can impact student outcomes. Frequent use and misuse of marijuana have been associated with a range of psychological and personality factors in young adults, but there has been limited research focused on the college environment in states where marijuana has been legalized for recreational purposes.
OBJECTIVES: We examined whether marijuana use and problems were associated with a range of demographic, personality, and psychological variables among college students at a midsized Colorado university.
METHODS: This cross-sectional study included 300 university students who submitted a urine screen and completed measures on marijuana use, problem marijuana use, anxiety, depression, impulsivity, and openness to experience.
RESULTS: Last year and recent marijuana use were high (65%, 29%; respectively), as assessed through self-report and a urine screen. Using logistic regression, male sex and greater openness to experience were associated with greater marijuana use when assessed with a urine screen, while greater openness to experience and impulsivity were associated with greater self-reported marijuana use within the last year. In the final step of a hierarchical linear regression model, male sex and greater impulsivity and depression-but not openness to experience, general anxiety or social anxiety-were associated with greater problem marijuana use.
CONCLUSIONS: This study extends the literature on psychological and personality correlates of marijuana use among college students. It may be useful to assess these correlates to identify students who are at risk of developing problems and in intervening with students with problem use.