Chunk #8 — MATERIALS AND METHODS — Assessments

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Comparing the utility of homogeneous subtypes of cocaine use and related behaviors with DSM-IV cocaine dependence as traits for genetic association analysis.

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The four most common lifetime DSM-IV diagnoses in the sample were CD (60.6%; 3,540 men and 2,500 women), nicotine dependence (54%), AD (47.5%), and OD (32.4%). Major depressive episode (MDE) was the most common psychiatric disorder (15.5%), followed by posttraumatic stress disorder (PTSD) (13.3%), antisocial personality disorder (ASPD) (12.3%), and pathological gambling (7.9%).