• J Trauma · Apr 1991

    Limitations of the TRISS method for interhospital comparisons: a multihospital study.

    • C G Cayten, W M Stahl, J G Murphy, N Agarwal, and D W Byrne.
    • Institute for Trauma & Emergency Care, New York Medical College, Valhalla.
    • J Trauma. 1991 Apr 1;31(4):471-81; discussion 481-2.

    AbstractThe value of the TRISS method for interhospital comparisons of trauma care was studied using data for 5,616 consecutive patients from three trauma centers and five community hospitals. Z-scores were used to compare mortality rates. Three limitations of the method were documented: 1) the lack of homogeneity within the patient subcategory of penetrating injuries, specifically between patients with gunshot versus stab wounds; 2) the inability of the TRISS method to predict the survival rate of patients suffering low falls; and 3) the inability of the TRISS method to account for multiple severe injuries to a single body part. Remedies to the first two of these limitations can be addressed within the present TRISS method. A remedy for the third requires a new method.

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