PRA served as the coordinating center for SAMHSA’s groundbreaking Women, Co-occurring Disorders, and Violence Study (WCDVS) from 1998-2005. The WCDVS sought to develop, implement, and then evaluate the effectiveness of comprehensive, integrated, trauma-informed treatment models on outcomes for women with co-occurring disorders and trauma histories. PRA led the intervention development in Phase I of the study and the evaluation in Phase II. The Phase II evaluation followed over 2700 women, across nine study sites to examine outcomes across a variety of domains, as well as programmatic and cost outcomes.