title: Using z scores as a measurement of institutional trauma care improvement.
authors.forename: V L
authors.initials: VL
authors.lastname: Landry
mesh_terms: D017598:Efficiency, Organizational; D006801:Humans; D010043:Outcome and Process Assessment, Health Care / Q000458:organization & administration*; D013223:Statistics as Topic; D014193:Trauma Centers / Q000458:organization & administration*; D014947:Wounds and Injuries / Q000628:therapy