Table 3. Conditional item probabilities by injury type and site in the 7-class latent class analysis model.

Injury Type	Injury Site	Class 1	Class 2	Class 3	Class 4	Class 5	Class 6	Class 7
		(n = 981)	(n = 742)	(n = 353)	(n = 804)	(n = 1,036)	(n = 387)	(n = 924)
Internal organ	Type 1 TBI	0.035	0.483	0.275	0.041	0.010	0.053	0.011
Internal organ	Type 2 TBI	0.355	0.256	0.362	0.835	0.168	0.312	0.102
Internal organ	Chest	0.194	0.174	0.459	0.101	0.017	0.123	0.385
Internal organ	Abdomen	0.180	0.065	0.489	0.051	0.038	0.083	0.312
Open wounds	Face	0.613	0.670	0.587	0.400	0.113	0.327	0.073
Open wounds	Pelvis and urogenital	0.531	0.051	0.104	0.014	0.100	0.063	0.043
Open wounds	Shoulder and upper arm	0.292	0.303	0.078	0.027	0.075	0.091	0.145
Open wounds	Forearm and elbow	0.476	0.205	0.160	0.078	0.076	0.111	0.074
Open wounds	Wrist, hand, and fingers	0.502	0.178	0.124	0.053	0.069	0.101	0.057
Open wounds	Other and unspecified lower extremity	0.791	0.390	0.452	0.177	0.516	0.347	0.125
Contusion/superficial	Eye	0.182	0.366	0.142	0.080	0.012	0.253	0.002
Contusion/superficial	Head, face, and neck unspecified	0.206	0.234	0.277	0.309	0.054	0.177	0.028
Burns	Head, face, and neck unspecified	0.041	0.060	0.017	0.006	0.002	0.597	0.000
Burns	Wrist, hand, and fingers	0.021	0.016	0.013	0.000	0.000	0.511	0.000
Burns	Other/multiple	0.011	0.017	0.003	0.020	0.004	0.324	0.004
Burns	Unspecified	0.114	0.110	0.050	0.007	0.004	0.986	0.009
Fracture (closed)	Chest	0.011	0.027	0.352	0.077	0.001	0.034	0.031
Fracture (closed)	Pelvis and urogenital	0.046	0.000	0.331	0.029	0.003	0.021	0.005
Fracture (closed)	Lower leg and ankle	0.047	0.010	0.400	0.181	0.086	0.080	0.002
Fracture (closed)	Foot and toes	0.032	0.000	0.302	0.183	0.076	0.052	0.003
Fracture (open)	Face	0.078	0.417	0.125	0.060	0.010	0.047	0.007
Fracture (open)	Thoracic/dorsal VCI	0.013	0.008	0.332	0.155	0.003	0.034	0.051
Fracture (open)	Lumbar VCI	0.036	0.017	0.584	0.243	0.012	0.072	0.041
Fracture (open)	Sacrum coccyx VCI	0.048	0.003	0.326	0.034	0.004	0.014	0.033
Fracture (open)	Wrist, hand, and fingers	0.394	0.086	0.067	0.007	0.014	0.040	0.033
Fracture (open)	Lower leg and ankle	0.247	0.034	0.339	0.064	0.482	0.177	0.008

TBI, traumatic brain injury; VCI, vertebral column injury.

Class 1 = open wounds; class 2 = Type 1 TBI/facial injuries; class 3 = disseminated injuries; class 4 = Type 2 TBI; class 5 = lower extremity injuries; class 6 = burns; and class 7 = chest and/or abdominal injuries.

Bolded values indicate conditional item probabilities above threshold of 0.3. Only injury types and sites with probabilities above threshold are shown.