In a series of papers released on Thursday by the World Health Organization and others, experts estimated nearly 40 percent of women killed worldwide were slain by an intimate partner and that being assaulted by a partner was the most common kind of violence experienced by women.
"Violence against women is a global health problem of epidemic proportions," WHO Director-General Dr. Margaret Chan said in a statement.
WHO defined physical violence as being slapped, pushed, punched, choked or being attacked with a weapon. Sexual violence was defined as being physically forced to have sex, having sex because you were afraid of what your partner might do and being compelled to do something sexual that was humiliating or degrading.
The report also examined rates of sexual violence against women by someone other than a partner and found about 7 percent of women worldwide had previously been a victim.
In conjunction with the report, WHO issued guidelines for authorities to spot problems earlier and said all health workers should be trained to recognize when women may be at risk and how to respond appropriately.
Globally, the WHO review found 30 percent of women are affected by domestic or sexual violence by a partner. The report was based largely on studies from 1983 to 2010. According to the United Nations, more than 600 million women live in countries where domestic violence is not considered a crime.
The rate of domestic violence against women was highest in Africa, the Middle East and Southeast Asia, where 37 percent of women experienced physical or sexual violence from a partner at some point in their lifetime. The rate was 30 percent in Latin and South America and 23 percent in North America. In Europe and Asia, it was 25 percent.
Some experts said screening for domestic violence should be added to all levels of health care, such as obstetric clinics.