This report of the WHO Multi-country Study on Women’s Health and Domestic Violence against Women analyses data collected from over 24,000 women in 10 countries representing diverse cultural, geographical and urban/rural settings: Bangladesh, Brazil, Ethiopia, Japan, Peru, Namibia, Samoa, Serbia and Montenegro, Thailand, and the United Republic of Tanzania. The Study was designed to: estimate the prevalence of physical, sexual and emotional violence against women, with particular emphasis on violence by intimate partners; assess the association of partner violence with a range of health outcomes; identify factors that may either protect or put women at risk of partner violence; document the strategies and services that women use to cope with violence by an intimate partner. This report presents findings on objectives 1, 2, and 4. The third, analysis of risk and protective factors, will be addressed in a future report.