Chunk #0 — Method — Participants

Source

Toward DSM-V: an item response theory analysis of the diagnostic process for DSM-IV alcohol abuse and dependence in adolescents.

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Participants included 5587 adolescents between the ages of 11–19 from three samples: clinical, adjudicated and community. Descriptive statistics are in Table 1. This sample is identical to that used to examine DSM-IV marijuana symptoms in a previous study 20.