title: Classification and short-term course of DSM-IV cannabis, hallucinogen, cocaine, and opioid disorders in treated adolescents.
abstract: This study examined the latent class structure of Diagnostic and Statistical Manual of Mental Disorders (text rev.; DSM-IV; American Psychiatric Association, 2000) symptoms used to diagnose cannabis, hallucinogen, cocaine, and opiate disorders among 501 adolescents recruited from addictions treatment. Latent class results were compared with the DSM-IV categories of abuse and dependence, and latent transition analysis (LTA) was used to examine changes in symptom severity over a 1-year follow-up. Although 2- and 3-class solutions provided the best fit to the data (2-class: hallucinogens, cocaine, opioids; 3-class: cannabis), 3-class solutions provided more substantive results and were emphasized in analyses. There was good agreement between latent classes and DSM-IV diagnosis. LTA suggested greater likelihood of transitioning to a less severe class at 1 year for all 4 drugs; in- and outpatients differed in pattern of change.
authors.affiliation: Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, PA 15213, USA. chungta@upmc.edu
authors.forename: Tammy
authors.initials: T
authors.lastname: Chung
authors.forename: Christopher S
authors.initials: CS
authors.lastname: Martin
mesh_terms: D000293:Adolescent; D002188:Cannabis; D003042:Cocaine; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006213:Hallucinogens; D006801:Humans; D008297:Male; D009294:Narcotics; D015995:Prevalence; D016320:Substance Abuse Treatment Centers; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000534:rehabilitation*
chemical_list: D006213:Hallucinogens; D009294:Narcotics; D003042:Cocaine