The Monitoring the Future project after four decades: Design and procedures

https://deepblue.lib.umich.edu/bitstream/2027.42/137908/1/mtf-occ82.pd

Demographic subgroup trends among young adults in the use of various licit and illicit drugs, 1989-2014

https://deepblue.lib.umich.edu/bitstream/2027.42/137875/1/mtf-occ85.pd

Demographic subgroup trends among adolescents in the use of various licit and illicit drugs, 1975-2014

https://deepblue.lib.umich.edu/bitstream/2027.42/137897/1/mtf-occ83.pd

Monitoring the Future national survey results on drug use, 1975-2013: Volume I, Secondary school students

https://deepblue.lib.umich.edu/bitstream/2027.42/137916/1/mtf-vol1_2013.pd

HIV/AIDS: Risk protective behaviors among adults ages 21 to 40 in the U.S., 2004-2013.

https://deepblue.lib.umich.edu/bitstream/2027.42/137914/1/mtf-hiv-aids_2013.pd

HIV/AIDS: Risk Protective Behaviors among American Young Adults, 2004-2012.

https://deepblue.lib.umich.edu/bitstream/2027.42/137918/1/mtf-hiv-aids_2012.pd

HIV/AIDS: Risk protective behaviors among adults ages 21 to 40 in the U.S., 2004-2015.

https://deepblue.lib.umich.edu/bitstream/2027.42/137905/1/mtf-hiv-aids_2015.pd

HIV/AIDS: Risk & protective behaviors among adults ages 21 to 40 in the U.S., 2004-2017

National Institute on Drug Abusehttps://deepblue.lib.umich.edu/bitstream/2027.42/146526/1/FINAL FINAL 2.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/146526/3/license_rdfDescription of FINAL FINAL 2.pdf : Annual monograp

The objectives and theoretical foundation of the Monitoring the Future Study

https://deepblue.lib.umich.edu/bitstream/2027.42/137886/1/mtf-occ84.pd

Young adult longitudinal patterns of marijuana use among US National samples of 12th grade frequent marijuana users: a repeatedâ measures latent class analysis

Background and AimsLongâ term frequent marijuana use is associated with significant negative outcomes, yet little is known about the longitudinal course of marijuana use among those who start frequent use during adolescence. Objectives are (a) to identify latent patterns of withinâ person marijuana use from ages 19â 30 years among 12th graders reporting frequent marijuana use, (b) to examine if membership in identified patterns has changed across historical time and (c) to examine if key covariates differentiate class membership.Design, Setting, ParticipantsLongitudinal, national US panel data from 4423 individuals [53.4% of the eligible sample; 2744 (62%) males] who reported frequent marijuana use in 12th grade (modal age 18 years; senior year cohorts 1976â 2006) followed biennially from ages 19/20 to 29/30.MeasurementsSelfâ reported past 30â day marijuana use (frequent use defined as use on 20+ occasions), demographics, college graduation, marriage and parenthood.FindingsRepeatedâ measures latent class analysis (RMLCA) identified five latent classes of past 30â day marijuana use from ages 19/20 to 29/30: continued frequent users (estimated membership 23.4%); frequent to nonâ frequent users (15.5%); consistent nonâ frequent users (18.4%); nonâ frequent users to discontinuers (19.5%); and discontinuers (23.2%). In multivariable models, membership in the highestâ risk latent class (continued frequent users) versus one or more of the lowerâ risk latent classes was more likely for recent cohorts (P = 0.038 to <0.001), as well as those who did not marry (P = 0.039 to < 0.001) or become parents (P = 0.001) by modal age 29/30.ConclusionsNearly one in four 12th grade (modal age 18 years) frequent marijuana users in the US continues to report high frequency use to age 30; the proportion continuing high frequency use across young adulthood has increased among more recent cohorts.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/149218/1/add14548_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/149218/2/add14548.pd