INTRODUCTIONNumerous studies have established that exposure to violent traumatic events is associated with a variety of psychiatric disorders, the most obvious of which is post-traumatic stress disorder (PTSD). Persons who have been sexually abused (Briere and Zaidi, 1989) Women who abuse drugs are among those who are likely to be victims of violence (Ladwig and Andersen, 1992). In a study examining violence during pregnancy, women who were victims of a violent attack were more likely than nonvictims to be alcohol or drug users and to have partners who used marijuana and cocaine (Amaro et al., 1990). Other studies have demonstrated a significant association between substance abuse and being a victim of sexual abuse, both during childhood and adulthood (Wallace, 1991; Paone et aZ., 1992; Dembo et af., 1988). Given the prevalence of such victimization among women substance abusers, comorbidity of addictive disorders and PTSD would appear to be highly likely.A number of studies have examined rates of comorbidity of PTSD and substance abuse (Boudewyns et al., 1991; Hyer et aI., 1991; McFafl et al., 1991;Breslau et al., 1991;Breslau and Davis, 1987;Druley and Pashko, 1988;Hryvniak and Rosse, 1989;Kulka et al., 1990). Several findings emerge from these studies. First, the rates of comorbidity vary widely from study to study, ranging from a high of 91% (Boudewyns et af., 1991) to a low of 11% (McFall et af., 1991). Second, for the most part, the highest rates of comorbidity were reported in studies conducted with subjects who were in treatment, while lower rates were observed in studies of the general population. Third, there appear to be no published studies that specifically examine the comorbidity of PTSD and substance abuse among women in treatment for addiction.In the study presented here, women in treatment for substance abuse in a New York City hospital located in the South Bronx were interviewed in order to examine the association between self-reported history of violent and non-violent traumatic events and a diagnosis of PTSD. The reasons for assessing PTSD were twofold. First, women drug users who live in the neighborhoods that are served by this clinic are at particular risk for exposure to violence, and a pilot study conducted at this clinic by the authors (Fullilove er al., 1992) suggested that the rate of PTSD might be quite high. Second, because those who seek drug treatment are very likely to exhibit comorbidity (Regier et a.!, 1990; Wallace, 1991), it becomes imperative that ITSD Among Women Drug Users 53s the characteristics of such comorbidity be assessed so that appropriate diagnostic and treatment programs might be created (Kolb, 1989).
METHODS
Recruitment of Study ParticipantsThe study was conducted at the Lincoln Medical and Mental Health Center Substance Abuse Division (SAD). The SAD is located in the Mott Haven section of the South Bronx, an inner-city area characterized by extensive loss of housing and high rates of violent crime, substance abuse, and AIDS (Wallace, 1988;. Occupying a former N...