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

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

VCA Category	N = 2764^a	Predictive performance for an ISS > 15
VCA Category	N = 2764^a	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 = 2764^a	Predictive performance for 30-day mortality
VCA Category	N = 2764^a	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 = 2764^a	Predictive performance for admission to ICU
VCA Category	N = 2764^a	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

Se Sensibility, Sp Specificity, PPV Positive Predictive Value, NPV Negative Predictive Value, PLR Positive Likelihood Ratio, NLR Negative Likelihood Ratio
^aN = total number of triage criteria within the study population (n = 1151)

ISSN: 1757-7241