Auteur R. M. JOHNSON

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Cocaine use is declining among emerging adults in the United States: Trends by college enrollment

K. E. SCHNEIDER ; J. K. JOHNSON ; R. M. JOHNSON | 2019
Dans Addictive Behaviors (Vol.96, September 2019) Article : Périodique

BACKGROUND: The difference in cocaine use between student and non-student emerging adults is not well understood, despite the longstanding assumption that college is protective against use. OBJECTIVE: To describe trends in cocaine use among eme[...]

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Past 15-year trends in adolescent marijuana use: Differences by race/ethnicity and sex

R. M. JOHNSON ; B. FAIRMAN ; T. GILREATH ; Z. XUAN ; E. F. ROTHMAN ; T. PARNHAM ; C. D. M. FURR-HOLDEN | 2015
Dans Drug and Alcohol Dependence (Vol.155, October 2015) Article : Périodique

Background: The potential for increases in adolescent marijuana use is an important concern given recent changes in marijuana policy. The purpose of this study was to estimate trends in marijuana use from 1999 to 2013 among a national sample of [...]

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Reduced drug use as an alternative valid outcome in individuals with stimulant use disorders: Findings from 13 multisite randomized clinical trials

M. AMIN-ESMAEILI ; M. FAROKHNIA ; R. SUSUKIDA ; L. LEGGIO ; R. M. JOHNSON ; R. M. CRUM ; R. MOJTABAI | 2024
Dans Addiction (Vol.119, n°5, May 2024) Article : Périodique

BACKGROUND AND AIMS: Total abstinence has historically been the goal of treatment for substance use disorders; however, there is a growing recognition of the health benefits associated with reduced use as a harm reduction measure in stimulant us[...]

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The relationship between marijuana and conventional cigarette smoking behavior from early adolescence to adulthood

A. N. KRISTMAN-VALENTE ; K. G. HILL ; M. EPSTEIN ; R. KOSTERMAN ; J. A. BAILEY ; C. M. STEEGER ; T. M. JONES ; R. D. ABBOTT ; R. M. JOHNSON ; D. WALKER ; J. D. HAWKINS | 2017
Dans Prevention Science (Vol.18, n°4, May 2017) Article : Périodique

Longitudinal analyses investigated (a) the co-occurrence of marijuana use and conventional cigarette smoking within time and (b) bidirectional associations between marijuana and conventional cigarette use in three developmental periods: adolesce[...]

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Usual modes of marijuana consumption among high school students in Colorado

R. M. JOHNSON ; A. BROOKS-RUSSELL ; M. MA ; B. J. FAIRMAN ; R. L. TOLLIVER ; A. H. LEVINSON | 2016
Dans Journal of Studies on Alcohol and Drugs (Vol.77, n°4, July 2016) Article : Périodique

Objective: The purpose of this study was to assess the prevalence of modes of marijuana consumption among Colorado youth and explore variation by demographics, access, substance use, and risk perceptions. Method: Data are from a 2013 survey of [...]

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