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Table 4 Performance of each category of the Vittel Criteria Algorithm (VCA) in predicting the risk of an ISS > 15, mortality within 30 days, or admission to Intensive Care Unit

From: Correlation between field triage criteria and the injury severity score of trauma patients in a French inclusive regional trauma system

VCA Category N = 2764a Predictive performance for an ISS > 15
Se % Sp % PPV % NPV % PLR NLR Youden index
Step 1: Physiological variables 420 50 87 77 68 3,9 0.57 0.37
Step 2: Kinetic elements 1328 86 13 45 52 0.99 1.09 −0.01
Step 3: Physical injuries 383 41 77 60 61 1.77 0.77 0.18
Step 4: Pre-hospital resuscitation 373 41 94 84 65 6.19 0.68 0.34
Step 5: Special considerations 260 23 86 58 57 1.27 0.85 0.09
VCA Category N = 2764a Predictive performance for 30-day mortality
Se % Sp % VPP % VPN % PLR NLR Youden index
Step 1: Physiological variables 420 89 75 24 99 3.57 0.15 0.64
Step 2: Kinetic elements 1328 77 13 7 86 0.88 1.85 −0.11
Step 3: Physical injuries 383 54 71 14 95 1.87 0.65 0.25
Step 4: Pre-hospital resuscitation 373 73 82 26 97 4.11 0.33 0.55
Step 5: Special considerations 260 45 84 20 95 2.8 0.7 0.29
VCA Category N = 2764a Predictive performance for admission to ICU
Se % Sp % VPP % VPN % PLR NLR Youden index
Step 1: Physiological variables 420 45 90 86 55 4.49 0.61 0.35
Step 2: Kinetic elements 1328 86 12 57 39 0.98 1.19 −0.02
Step 3: Physical injuries 383 38 78 70 48 1.75 0.79 0.16
Step 4: Pre-hospital resuscitation 373 36 97 93 53 10.3 0.7 0.32
Step 5: Special considerations 260 20 85 64 44 1.3 0.9 0.05
  1. Se Sensibility, Sp Specificity, PPV Positive Predictive Value, NPV Negative Predictive Value, PLR Positive Likelihood Ratio, NLR Negative Likelihood Ratio
  2. aN = total number of triage criteria within the study population (n = 1151)