Marijuana Use Among American Indian Adolescents: A Growth Curve Analysis From Ages 14 Through 20 Years - 07/09/11
Abstract |
Objective |
To describe the developmental course of marijuana use among a group of American Indian adolescents, aged 14 through 20 years.
Method |
A group of 1,766 American Indian adolescents from 3 culture groups provided repeated measures of 30-day marijuana use twice a year across a 3-year period. Linking 5 age cohorts, hierarchical linear modeling was used to model a curvilinear trajectory of marijuana use. Gender and community differences were examined as well.
Results |
Support was found for a “maturational” model of marijuana use across time: Use increased in middle adolescence, peaked in later adolescence, and began to decrease in early adulthood. Both gender and community differences in trajectories were significant as well.
Conclusions |
Marijuana use among American Indian adolescents follows a clear developmental trajectory. Growth curve analysis can provide an additional tool for studying the effects of interventions that may not be apparent in a traditional evaluation design. J. Am. Acad. Child Adolesc. Psychiatry, 1999, 38(1):72–78.
Le texte complet de cet article est disponible en PDF.Key Words : marijuana, American Indian, adolescence, growth curve analysis, hierarchical linear modeling
| The preparation of this paper was supported by NIAAA grant R01-AA08474 and NIDA grant R01-DA10039. Yasuo Miyazki was very helpful in advising us about procedures for linking the cohorts and conducting post hoc tests of mean trajectories. In addition, we deeply appreciate the time and contribution of the community schools and the study participants, without whom this study could not have been conducted. |
Vol 38 - N° 1
P. 72-78 - janvier 1999 Retour au numéro
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