This paper analyzes the demographic and pretreatment characteristics of mal
e and female participants in the National Treatment Improvement Evaluation
Study, including the women's treatment experiences and tire outcomes of var
ious types of substance abuse treatment. Follow-up of a multisite sample of
1,374 women and 3,037 men indicates minimal differences exist between men
and women in the outcomes of five modalities of substance abuse treatment,
Treatment appears to reduce women's drug and alcohol use and illegal activi
ties and increase their levels of employment. Demographic and pretreatment
characteristics are only modestly associated with differences in treatment
out-comes, and differential service receipt has inconsistent effects on out
comes.