Physicians' Risk Tolerance and Head Computed Tomography Use for Pediatric Patients With Minor Head Injury

Objectives Traumatic brain injury is the leading cause of death and disability in children worldwide. The objective of this study was to determine the association between physician risk tolerance and head computed tomography (CT) use in patients with minor head injury (MHI) in the emergency department (ED). Methods We retrospectively analyzed pediatric patients (<17 years old) with MHI in the ED and then administered 2 questionnaires (a risk-taking subscale [RTS] of the Jackson Personality Inventory and a malpractice fear scale [MFS]) to attending physicians who had evaluated these patients and made decisions regarding head CT use. The primary outcome was head CT use during ED evaluation; the secondary outcome was ED length of stay and final diagnosis of intracranial injury (ICI). Results Of 523 patients with MHI, 233 (44.6%) underwent brain CT, and 16 (3.1%) received a final diagnosis of ICI. Among the 16 emergency physicians (EPs), the median scores of the MFS and RTS were 22 (interquartile range, 17-26) and 23 (interquartile range, 19-25), respectively. Emergency physicians who were most risk averse tended to order more head CT scans compared with the more risk-tolerant EPs (56.96% vs 37.37%; odds ratio, 8.463; confidence interval, 2.783-25.736). The ED length of stay (P = 0.442 and P = 0.889) and final diagnosis (P = 0.155 and P = 0.835) of ICI were not significantly associated with the RTS and MFS scores. Conclusions Individual EP risk tolerance, as measured by RTS, was predictive of CT use in pediatric patients with MHI.