In recent years, homicide rates have been highest in developing countries in Sub-Saharan Africa and Latin America and the Caribbean and lowest in East Asia, the western Pacific, and some countries in northern Africa. Studies show a strong, inverse relationship between homicide rates and both economic development and economic equality. Poorer countries, especially those with large gaps between the rich and the poor, tend to have higher rates of homicide than wealthier countries. Homicide rates differ markedly by age and sex. Gender differences are least marked for children. For the 15 to 29 age group, male rates were nearly six times those for female rates; for the remaining age groups, male rates were from two to four times those for females.Studies in a number of countries show that, for every homicide among young people age 10 to 24, 20 to 40 other young people receive hospital treatment for a violent injury.Forms of violence such as child maltreatment and intimate partner violence are highly prevalent. Approximately 20% of women and 5–10% of men report being sexually abused as children, while 25–50% of all children report being physically abused. A WHO multi-country study found that between 15 and 71% of women reported experiencing physical and/or sexual violence by an intimate partner at some point in their lives. Collective violence
Wars grab headlines, but the individual risk of dying violently in an armed conflict is today relatively low—much lower than the risk of violent death in many countries that are not suffering from an armed conflict.
In 1996, the World Health Assembly adopted Resolution WHA49.25 which declared violence "a leading worldwide public health problem" and requested that the World Health Organization (WHO) initiate public health activities to (1) document and characterize the burden of violence, (2) assess the effectiveness of programmes, with particular attention to women and children and community-based initiatives, and (3) promote activities to tackle the problem at the international and national levels. The World Health Organizations initial response to this resolution was to create the Department of Violence and Injury Prevention and Disability and to publish the World report on violence and health (2002).The case for the public health sector addressing interpersonal violence rests on four main arguments. First, the significant amount of time health care professionals dedicate to caring for victims and perpetrators of violence has made them familiar with the problem and has led many, particularly in emergency departments, to mobilize to address it. The information, resources, and infrastructures the health care sector has at its disposal are an important asset for research and prevention work. Second, the magnitude of the problem and its potentially severe lifelong consequences and high costs to individuals and wider society call for population-level interventions typical of the public health approach.