Overall, characteristics of perpetrators, victims, and families of victims were moderate to strong risk factors for child sexual abuse; however, it is difficult to distinguish between risk factors for extra-familial and intra-familial child sexual victimization, because most of the studies combined these two types of child sexual abuse, although the risk factors for these two types of child sexual abuse most likely differ. Research in this area is difficult, because etiological and prevention models of victimization would differ substantially from those of perpetration. Given the low yearly prevalence of child sexual victimization, very large samples would be necessary to obtain sufficient power. Thus, most studies have used lifetime prevalence, which may provide much useful information but which add substantial time confounds. Finally, child sexual victimization is probably a misnomer, since the nature, impact, and etiology of sexual victimization most likely differs over the large age span of childhood and gender. Because improved models and prevention programs require improved etiological models (based on knowledge of risk and protective factors), the authors hope that this review will focus stakeholders on the need for continued research in this area. 3 tables and 40 references