Social network characteristics as mediators in the relationship between sexual abuse and HIV risk.

Recent research suggests that sexual abuse may be a potent risk factor for engaging in HIV risk behaviors for women. This relationship is likely mediated by the long term sequelae of sexual abuse. One plausible causal pathway posits that specific social network characteristics increase HIV risk exposure opportunities. This is premised on the belief that previous sexual abuse predisposes some women to become members of risk networks characterized by deviant behaviors and that HIV risk occurs in the context of these networks. One hundred and thirty women opiate users were systematically recruited from methadone maintenance and syringe exchange programs in New York City. The women participated in a one hour interview and provided information on drug use and frequency, HIV drug and sex risk behaviors, social network characteristics, and sexual abuse histories. Univariate and logistic regression techniques were used to test the relationship between sexual abuse and increased HIV risk as mediated by social network characteristics. Previous sexual abuse was strongly related to all social network characteristics examined. Moreover, these network characteristics appeared to affect patterns of drug use in identifiable ways. Social isolation was the only network characteristic associated with both HIV drug and sex risk behaviors. However, although a history of sexual abuse was significantly associated with five of the seven specific HIV risk behaviors examined, the relationship between sexual abuse and HIV risk behaviors remained unchanged when social network characteristics were included in the statistical model. Overall, the results suggest that a sexual abuse experience or its aftermath influence behavior far into the future. However, the results of this study did not show social network characteristics mediating the relationship between sexual abuse and HIV risk. Rather, previous sexual abuse and social network characteristics appear to be independent contributors to HIV risk behaviors for women.