In the Article titled “Prevalence of Clinically Important Traumatic Brain Injuries in Children With Minor Blunt Head Trauma and Isolated Severe Injury Mechanisms” published in the April 2012 issue of Arch Pediatr Adolesc Med (2012;166:356-361. doi:10.1001/archpediatrics.2011.1156), incorrect information appeared. Owing to an error in the construction of the final analytic database, the number of children with severe injury mechanism increased by 394, and the number of children with isolated severe injury mechanism increased from 3302 to 3630 as a result. These increased numbers led to numerous modifications to data points in the article. However, the most important data points in the report are only slightly affected. The overall incidence of isolated severe injury mechanism increases by only a single percentage point in this population, and the rates of clinically important traumatic brain injuries associated with isolated severe injury mechanism remain low, decreasing by one-tenth of 1% among older children, with no change among younger children from the published report. The Abstract, Results and Comment section, and Tables 1, 2, and 3 have been updated to reflect the correct information. This article was corrected online.