The validity of behavioral data reported by injection drug users on a clinical risk assessment.

The validity of drug and sexual behavior data collected by drug user treatment staff using a short clinical risk assessment among 387 injection drug users is evaluated using in-depth, confidential interview process. Moderate to high agreement levels were found for most, but not all, variables. Participants consistently reported less risky behaviors on the clinical risk assessment than on the in-depth interview. More easily recalled information can be accurately gathered through a short clinical risk assessment. However, in-depth, confidential interviewing is important when gathering self-reports of the frequency of drug and sexual behaviors.