The major types of injuries related to TBI include falls (28%), motor-vehicle crashes (20%), struck by object (19%), and assaults (11%) as seen below. Falls are the most common, and are the highest in small children from 0 to 4 years old and adults over 75 years old. Motor vehicle crashes are responsible for the most hospitalizations and is highest among teenagers aged 15 to 19 years old. In an assault, the use of a firearm significantly increased the risk of TBI. Almost two-thirds of firearm-related TBIs are the result of an attempted suicide. Fatal TBI depends on the type of injury. Over 91% of firearm TBIs results in death while only 11% of falls result in death.