(HealthDay)—The prevalence of traumatic brain injury (TBI) is 2.5 percent among U.S. children, and TBI is associated with several health conditions, according to a study published online Sept. 24 in JAMA Pediatrics. Juliet Haarbauer-Krupa, Ph.D., from the U.S. Centers for Disease Control and Prevention in Atlanta, and colleagues examined the lifetime prevalence of TBI in