title: Predictors and concomitants of changes in drug use patterns among teenagers.
mesh_terms: D000293:Adolescent; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010287:Parent-Child Relations; D012649:Self Concept; D012917:Social Adjustment; D019966:Substance-Related Disorders / Q000523:psychology*