Adults with disabilities, particularly mental illness, have been found to be at an increased risk of being a victim of violence, according to a study funded by the World Health Organization’s Department of Violence and Injury Prevention and Disability. This finding , a meta-analysis of 21 studies, found that one in four people with a mental illness experience some type of violence in a given year – a much higher rate than that experienced by the general population. The chance that a person with a mental illness will experience physical, sexual, or domestic violence was found to be 3.86-fold higher than the odds of an adult without any disabilities at all. However, violence against individuals with other disabilities was common – it was found that individuals reporting any disability were 50 percent more likely to experience physical, sexual, or intimate partner violence in the prior 12 months than those individuals without a disability, and 60 percent higher for people with intellectual impairments. Researchers believe that their inclusion criteria probably underestimated the prevalence of violence against people with disabilities because many of the studies were based in high-income countries with lower reported rates of violence. Furthermore, there were no studies of violence against individuals with intellectual disabilities in institutional settings or studies of individuals with sensory impairments included in the analysis. Approximately 15 percent of adults worldwide have a disability.