Contemporary New Zealand coefficients for the Trauma Injury Severity Score: TRISS(NZ)
Schluter, Philip J., Cameron, Cate M., Davey, Tamzyn M., Civil, Ian, Orchard, Jodie, Dansey, Rangi, Hamill, James, Naylor, Helen, James, Carolyn, Dorrian, Jenny, Christey, Grant, Pollard, Cliff, & McClure, Rod J. (2009) Contemporary New Zealand coefficients for the Trauma Injury Severity Score: TRISS(NZ). New Zealand Medical Journal : Journal of the New Zealand Medical Association, 122(1302).
Aims – To develop local contemporary coefficients for the Trauma Injury Severity Score in New Zealand, TRISS(NZ), and to evaluate their performance at predicting survival against the original TRISS coefficients.
Methods – Retrospective cohort study of adults who sustained a serious traumatic injury, and who survived until presentation at Auckland City, Middlemore, Waikato, or North Shore Hospitals between 2002 and 2006. Coefficients were estimated using ordinary and multilevel mixed-effects logistic regression models.
Results – 1735 eligible patients were identified, 1672 (96%) injured from a blunt mechanism and 63 (4%) from a penetrating mechanism. For blunt mechanism trauma, 1250 (75%) were male and average age was 38 years (range: 15-94 years). TRISS information was available for 1565 patients of whom 204 (13%) died. Area under the Receiver Operating Characteristic (ROC) curves was 0.901 (95%CI: 0.879-0.923) for the TRISS(NZ) model and 0.890 (95% CI: 0.866-0.913) for TRISS (P<0.001). Insufficient data were available to determine coefficients for penetrating mechanism TRISS(NZ) models.
Conclusions – Both TRISS models accurately predicted survival for blunt mechanism trauma. However, TRISS(NZ) coefficients were statistically superior to TRISS coefficients. A strong case exists for replacing TRISS coefficients in the New Zealand benchmarking software with these updated TRISS(NZ) estimates.
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|Item Type:||Journal Article|
|Additional Information:||Tamzyn Davey is currently employed by the Centre for Accident Research and Road Safety - Queensland, Queensland University of Technology.|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OTHER MEDICAL AND HEALTH SCIENCES (119900)|
|Divisions:||Current > Research Centres > Centre for Accident Research & Road Safety - Qld (CARRS-Q)|
|Copyright Owner:||Copyright 2009 New Zealand Medical Association|
|Deposited On:||26 Nov 2009 10:58|
|Last Modified:||02 Feb 2012 19:21|
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