Predicting treatment retention among cocaine users.

Few studies have addressed treatment retention among cocaine-using samples. The current study develops and tests a model of treatment retention at the individual level, employing data from 110 cocaine users who initiated outpatient treatment. The model includes measures of extent of drug involvement, social isolation and support, motivation, and demographic characteristics. Logistic regression is used to fit a final model, which includes measures of the following: living alone, use of multiple substances prior to treatment, length of cocaine use, and external motivation. Treatment implications and directions for further research are discussed.