Medical assessment in drug addicts: reliability and validity of the Cumulative Illness Rating Scale (Substance Abuse version).

Objective: To adapt the Cumulative Illness Rating Scale for its use in substance abuse patients (CIRS-SA) and to assess the reliability, internal consistency, and validity of the instrument.

Method: One-hundred outpatients of both sexes, 62 men and 38 women, with a mean (SD) age of 32.4 (7.