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Trajectories of drug use among French young people: Prototypical stages of involvement in illicit drug use

Stéphanie Baggio, Stanislas Spilka, Joseph Studer, Katia Iglesias, Gerhard Gmel

Journal of Substance Use January 20, 2016 DOI: 10.3109/14659891.2015.1063720 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Cross-sectional survey with latent class and survival analyses Peer reviewed
Sample size 23,882
Population French 17-year-olds from the 2011 ESCAPAD survey
Topics Cannabis MDMA
Keywords Illicit drug Substance use Population
Citations 9
Key findings Patterns of illicit drug use among French 17-year-olds separate into two distinct groups, with use of the first group (amphetamines, cocaine, ecstasy, magic mushrooms, poppers, solvents) typically preceding use of the second group (crack, GHB, heroin, LSD, ketamine).

Abstract

Aims: This study investigated patterns and trajectories of substance use, with a special focus on illicit drugs other than cannabis. It examined both patterns and trajectories of use among a general population-based sample.

Methods: We used data from the 2011 French ESCAPAD survey of French 17-year-olds to assess exposure and age of initiation of 14 licit and illicit drugs (N=23,882). Latent class analysis (LCA) and survival analyses were performed.

Results: The results of the LCA showed that patterns of illicit drug use clearly distinguished between two groups of other illicit drugs: 1) amphetamines/speed, cocaine, ecstasy/MDMA, magic mushrooms, poppers, and solvents; 2) crack/freebase, GHB/GBL, heroine, LSD, and ketamine. Survival analyses highlighted that trajectories involved the first group before the second one.

Conclusions: Prototypical drug use patterns and trajectories should include a distinction between two groups of illicit drugs. Preventive actions should focus on young people in their early teens, since very young users are more likely to progress to illicit drug use, and further studies should include this distinction instead of aggregating other illicit drugs into a single category.

Comparable studies

Other cross-sectional and survey studies on cannabis, most cited first.

Study Year Design Participants
Cannabis use before age 15 and subsequent executive functioning 104 chronic cannabis users (49 early-onset before age 15, 55 late-onset after age 15)... 2011 Observational cross-sectional study n = 148
Patterns of simultaneous polysubstance use in drug using university students Drug-using university students 2006 Cross-sectional survey n = 149
Persisting Reductions in Cannabis, Opioid, and Stimulant Misuse After Naturalistic Psychedelic Use: An Online Survey Online survey respondents 2020 Cross-sectional survey
User perceptions of the benefits and harms of hallucinogenic drug use: A web-based questionnaire study Users of hallucinogenic drugs who completed a web-based questionnaire 2010 Cross-sectional survey n = 600
Illicit Use of LSD or Psilocybin, but not MDMA or Nonpsychedelic Drugs, is Associated with Mystical Experiences in a Dose-Dependent Manner Adults recruited from the MAPS website and newsletter, most reporting use of various... 2012 Cross-sectional survey n = 337

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