This fact sheet examines cases of hospitalised assault against men in 2014–15. Almost 13,000 men and boys were hospitalised as a result of an assault. Rates of assault were highest at 20–24 years. Over half (61%) of all men and boys were assaulted by bodily force. The most common injury as a result of an assault was a fracture (40%). Half (53%) of all hospitalised assault injury cases involving men and boys had an unspecified person listed as the perpetrator. In cases where the perpetrator was specified, about two-thirds (64%, or 3,720) of hospitalised assault injuries were perpetrated by a person known to the victim.