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- J S Sampalis, A Lavoie, J I Williams, D S Mulder, and M Kalina.
- Department of Surgery, McGill University, Montreal, Quebec, Canada.
- J Trauma. 1992 Aug 1; 33 (2): 205-11; discussion 211-2.
AbstractFlora's Z statistic and standardized mortality ratios (SMRs) as indicators of excess mortality were calculated for a sample of 355 patients with major trauma. A statistically significant overall excess mortality was observed in this sample (Z = 6.77, SMR = 1.81, p less than 0.05). Advanced life support provided by physicians at the scene (MD-ALS) was not associated with reduced excess mortality. A significant trend toward lower excess mortality was associated with a higher level of trauma care at the receiving hospital (p less than 0.05). Total prehospital time over 60 minutes was associated with a significant increase in excess mortality (p less than 0.001). These results support regionalization of trauma care and failed to show any benefit associated with MD-ALS.
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