NIDA-CTN-0059

This study seeks to develop and validate a 4-item screen and a two-stage screening and brief assessment tool to screen and assess primary care patients for tobacco, alcohol, prescription drug, and illicit substance use and problems related to their use. The screen and two-stage screening and brief assessment tool (the latter hereafter called the Tobacco, Alcohol, Prescription medications, and other Substance [TAPS] tool) will be evaluated via self-administration and via interviewer-administration.