In the article that appeared on pages E57-E64 of the January/February 2015 issue, the first sentence of the second paragraph of the Methods section should have read “the full negative binomial regression model took the form of:
where y is the estimated number of incident TBIs in a given month, x 1 is the number of amputations, and x 2 is the estimated number of deployed active component military personnel (in thousands).
The authors regret the error.
Chase RP, Nevin RL (2015). Population Estimates of Undocumented Incident Traumatic Brain Injuries Among Combat-Deployed U.S. Military Personnel. J. Head Trauma Rehabil, 30, E57–E64.