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Table 3 Predictors for life-saving Emergency Operations

From: Duration and predictors of emergency surgical operations - basis for medical management of mass casualty incidents

Variable Regression coefficient Odds ratio (OR) eβ Confidence interval 95% p value
AIS Abdomen ≥ 3 1.38 4.0 3.3-4.7 < 0.001*
ISS ≥ 35 1.08 2.9 2.3-3.8 < 0.001*
ISS ≥ 25 0.68 2.0 1.6-2.5 < 0.001*
Hemoglobin ≤ 8 mg/dL 0.34 1.4 1.1-1.7 0.002*
Pulse on hospital admission ≤ 39 or ≥ 120/min 0.33 1.4 1.1-1.8 0.011*
Shock on TR admission RR < 90 mmHg 0.30 1.4 1.1-1.7 0.004*
Prehospital infusion volume 0.30 1.3 1.2-1.6 0.001*
≥ 2000 ml     
GCS ≤ 8 0.26 1.3 1.1-1.6 0.003*
Anisocoria on-scene 0.25 1.3 1.0-1.6 0.039*
AIS extremities ≥ 3 -0.19 0.8 0.7-0.9 0.030*
Age > 75 years -0.48 0.6 0.4-0.9 0.016*
Closed chest cardiac massage -0.53 0.6 0.4-0.9 0.024*
on-scene     
AIS thorax ≥ 3 -0.67 0.5 0.4-0.6 < 0.001*
Constant -2.925 0.05 - < 0.001*
  1. AIS, abbreviated injury scale; ISS, Injury Severity Score; TR, Trauma Room; GCS, Glasgow Coma Scale.
  2. Logistic regression model (stepwise forward, 12 steps) based on n = 6,145 patients. The model was calculated with the above listed 20 starting variables.