Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Thompson says criminal justice policies led to creation of prison gangs like Aryan Brotherhood

Schmitz finds job loss before retirement age contributes to weight gain, especially in men

Kimball says Fed should get comfortable with "backtracking"

Highlights

Overview of Michigan's advanced research computing resources, Monday, June 27, 9-10:30 am, BSRB - Kahn Auditorium

U-M's Data Science Initiative offers expanded consulting services via CSCAR

Elizabeth Bruch promoted to Associate Professor

Susan Murphy elected to the National Academy of Sciences

Next Brown Bag

PSC Brown Bags
will resume fall 2016

John E. Schulenberg photo

Trajectories of Marijuana Use During the Transition to Adulthood: the Big Picture Based on National Panel Data

Publication Abstract

Schulenberg, John E., A.C. Merline, Lloyd Johnston, Patrick M. O'Malley, Jerald Bachman, and V.B. Laetz. 2005. "Trajectories of Marijuana Use During the Transition to Adulthood: the Big Picture Based on National Panel Data." Journal of Drug Issues, 35:255-279.

The purposes of this study were to identify trajectory groups of frequent marijuana use during emerging adulthood; distinguish among trajectory groups according to demographic and lifestyle characteristics; and examine how the trajectory groups relate to behavioral, attitudinal, and social-emotional correlates over time. National panel data from the Monitoring the Future study were used: 18 cohorts of high school seniors (classes of 1977-1994) were followed biennially through age 24. Frequent marijuana use was defined as 3+ occasions of use in past month and/or 20 to 40+ occasions in past year Based on four waves of complete longitudinal data (N= 19,952), six frequent marijuana use trajectory groups were identified: chronic, decreased, increased, fling, rare, and abstain. Categorical analyses revealed trajectory group differences in demographic and lifestyle characteristics at senior year and age 24. The trajectory groups varied significantly in longitudinal patterns of other substance use, problem behaviors, and well-being.

PMCID: PMC1400593. (Pub Med Central)

Licensed Access Link

Country of focus: United States of America.

Browse | Search : All Pubs | Next