Lloyd D Johnston Selected Research

Marijuana Use

10/2020	Changes in the Order of Cigarette and Marijuana Initiation and Associations with Cigarette Use, Nicotine Vaping, and Marijuana Use: U.S. 12th Grade Students, 2000-2019.
1/2018	Patterns of simultaneous and concurrent alcohol and marijuana use among adolescents.
11/2013	Simultaneous alcohol and marijuana use among U.S. high school seniors from 1976 to 2011: trends, reasons, and situations.
6/2013	Middle and high school drug testing and student illicit drug use: a national study 1998-2011.
10/2012	HIV/AIDS risk behaviors and substance use by young adults in the United States.
5/2011	Exercise and substance use among American youth, 1991-2009.
1/2011	Adolescents' reported reasons for alcohol and marijuana use as predictors of substance use and problems in adulthood.
10/2009	Evidence for Connections Between Prosecutor-Reported Marijuana Case Dispositions and Community Youth Marijuana-Related Attitudes and Behaviors.
4/2005	Selection and socialization effects of fraternities and sororities on US college student substance use: a multi-cohort national longitudinal study.
4/2005	The epidemiology of alcohol, marijuana, and cocaine use among Mexican American, Puerto Rican, Cuban American, and other Latin American eighth-grade students in the United States: 1991-2002.

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Lloyd D Johnston Research Topics

Disease

11	Marijuana Use 10/2020 - 01/2004
9	Substance-Related Disorders (Drug Abuse) 01/2016 - 03/2002
3	Binge Drinking 01/2018 - 05/2011
1	HIV Infections (HIV Infection) 10/2012
1	Alcoholism (Alcohol Abuse) 01/2011
1	Body Weight (Weight, Body) 01/2007
1	Overweight 01/2007
1	Prescription Drug Misuse 01/2004

Drug/Important Bio-Agent (IBA)

7	Pharmaceutical PreparationsIBA 11/2013 - 03/2002
4	Illicit Drugs (Recreational Drugs)IBA 06/2013 - 04/2005
2	Cocaine (Cocaine HCl)IBA 04/2005 - 01/2004
1	Nicotine FDA Link 10/2020
1	SolutionsIBA 01/2018
1	Synthetic CathinoneIBA 01/2016
1	CannabinoidsIBA 01/2016
1	SteroidsIBA 05/2011
1	antineoplaston A10 (A 10)IBA 01/2007
1	Prednisolone (Predate)FDA LinkGeneric 04/2005

Therapy/Procedure

1	Condoms (Condom) 10/2012