"Traumatic brain injury (TBI) is a leading cause of death and disability among children and young adults in the United States. Each year an estimated 1.5 million Americans sustain a TBI. As a consequence of these injuries: 1) 230,000 people are hospitalized and survive. 2) 50,000 people die. 3) 80,000 to 90,000 people experience the onset of long-term disability. As the cumulative result of past traumatic brain injuries, an estimated 5.3 million men, women, and children are living with a permanent TBI-related disability in the United States today. While the risk of having a TBI is substantial among all age groups, this risk is highest among adolescents, young adults, and persons older than 75 years. The risk of TBI among males is twice the risk among females. The major causes of TBI are: 1) Motor vehicle crashes-the leading cause of TBI resulting in 'hospitalization.' 2) Violence, especially suicidal behavior and assaults that involve firearms-the leading cause of TBI -related 'death.' 3) Falls-the leading cause of TBI among the elderly. These injuries have both short-term and long-term effects on individuals, their families, and society and their financial cost is enormous. According to one study, the annual economic burden in the United States was approximately $37.8 billion in 1985."
Centers for Disease Control and Prevention: http://stacks.cdc.gov/