The difference between the Injury Severity Score (ISS) and the New Injury Severity Score (NISS) was determined for 1,533 inpatients consecutively admitted in 1998 in the Emergency Department of a University Hospital in Sao Paulo, Brazil. The average ISS was 12.49 +/- 12.72, and the average NISS was 16.99 +/- 17.60. The two predictive scores were identical in 47.75% of the patients and discrepant in 52.25%. In all cases of discrepant scores, the NISS was greater than the ISS. NISS identified significantly more (42.47%) major trauma patients (score >/= 16) than ISS (34.18%) (p < 0.001). For nonsurvivors the percentage of discrepant score was higher (75.68%) than for the survivors group (48.28%).
Samenvatting