RT Journal A1 Andruchow JE, MD, MSc, Raja AS, MD, MBA, MPH, Prevedello LM, MD, MPH, Zane RD, MD, Khorasani R, MD, MPH T1 VAriation in head computed tomography use for emergency department trauma patients and physician risk tolerance JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2012 FD April 23 VO 172 IS 8 SP 660 OP 661 DO 10.1001/archinternmed.2011.2243 UL http://dx.doi.org/10.1001/archinternmed.2011.2243 AB Physician risk intolerance and malpractice fear have been implicated as leading to defensive behaviors and increased use of health care resources.1 In the emergency department (ED), physician risk aversion has been associated with higher rates of testing and hospitalization for low-risk patients with chest pain,2- 3 greater use of diagnostic imaging for patients with abdominal pain,4 and an increased likelihood of performing head computed tomography (CT) in scenarios involving pediatric patients with minor head injury.5