Specifically, women were more likely than men to have had sexual relations with a drug injector and greater involvement in prostitution, including exchanging sex for drugs or money. Women had fewer legitimate employment opportunities and were less likely to have received support through illegal sources, excluding prostitution, than men. Women had significantly lowered perceived self-concept, greater depression, and more anxiety than men. Gender, economic means of support, and self-concept were highly interrelated. Findings underscore the need for interventions that address the economically marginalized position of addicted women and their low self-concept. Tables and 73 references (Author abstract modified)