Christie A Hartman1, Heather Gelhorn2, Thomas J Crowley2, Joseph T Sakai2, Michael Stallings2, Susan E Young2, Soo Hyun Rhee2, Robin Corley2, John K Hewitt2, Christian J Hopfer2. 1. Drs. Hartman, Gelhorn, Crowley, Sakai, and Hopfer are with the School of Medicine at the University of Colorado Health Sciences Center; Drs. Stallings, Young, Rhee, Corley, and Hewitt are with the Institute for Behavioral Genetics at the University of Colorado.. Electronic address: christie.hartman@colorado.edu. 2. Drs. Hartman, Gelhorn, Crowley, Sakai, and Hopfer are with the School of Medicine at the University of Colorado Health Sciences Center; Drs. Stallings, Young, Rhee, Corley, and Hewitt are with the Institute for Behavioral Genetics at the University of Colorado.
Abstract
OBJECTIVE: To examine three aspects of adolescent cannabis problems: do DSM-IV cannabis abuse and dependence criteria represent two different levels of severity of substance involvement, to what degree do each of the 11 abuse and dependence criteria assess adolescent cannabis problems, and do the DSM-IV items function similarly across different adolescent populations? METHOD: We examined 5,587 adolescents ages 11 to 19, including 615 youths in treatment for substance use disorders, 179 adjudicated youths, and 4,793 youths from the community. All of the subjects were assessed with a structured diagnostic interview. Item response theory was used to analyze symptom endorsement patterns. RESULTS: Abuse and dependence criteria were not found to represent different levels of severity of problem cannabis use in any of the samples. Among the 11 abuse and dependence criteria, problems cutting down and legal problems were the least informative for distinguishing problem users. Two dependence criteria and three of the four abuse criteria indicated different severities of cannabis problems across samples. CONCLUSIONS: We found little evidence to support the idea that abuse and dependence are separate constructs for adolescent cannabis problems. Furthermore, certain abuse criteria may indicate severe substance problems, whereas specific dependence items may indicate less severe problems. The abuse items in particular need further study. These results have implications for the refinement of the current substance use disorder criteria for DSM-V.
OBJECTIVE: To examine three aspects of adolescent cannabis problems: do DSM-IV cannabis abuse and dependence criteria represent two different levels of severity of substance involvement, to what degree do each of the 11 abuse and dependence criteria assess adolescent cannabis problems, and do the DSM-IV items function similarly across different adolescent populations? METHOD: We examined 5,587 adolescents ages 11 to 19, including 615 youths in treatment for substance use disorders, 179 adjudicated youths, and 4,793 youths from the community. All of the subjects were assessed with a structured diagnostic interview. Item response theory was used to analyze symptom endorsement patterns. RESULTS: Abuse and dependence criteria were not found to represent different levels of severity of problem cannabis use in any of the samples. Among the 11 abuse and dependence criteria, problems cutting down and legal problems were the least informative for distinguishing problem users. Two dependence criteria and three of the four abuse criteria indicated different severities of cannabis problems across samples. CONCLUSIONS: We found little evidence to support the idea that abuse and dependence are separate constructs for adolescent cannabis problems. Furthermore, certain abuse criteria may indicate severe substance problems, whereas specific dependence items may indicate less severe problems. The abuse items in particular need further study. These results have implications for the refinement of the current substance use disorder criteria for DSM-V.
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