Includes social, political and economic violence. Violence against women encompasses: Physical, sexual and psychological violence occurring in the family, including battering, sexual abuse of female children in the household, dowry-related violence, marital rape, female genital mutilation and other traditional practices harmful to women, violence perpetrated by family members other than the spouse and violence related to exploitation. Studies reveal gender, age and ethnic biases in youth violence. However, there are major impediments that hinder comparative analysis of rates of violence among youth, including lack of information, insufficient disaggregation of the information that does exist and the fact that the available data cover different periods and have been collected from numerous sources. Most countries in the world lack adequate information on the number of deaths caused by violence, and in any case deaths account for only a small proportion of the problem.