Table 2.

Risk stratification of 14-day mortality in head trauma patients based on CRASH model expected risk (ER

	Outcome		Likelihood ratio	P
	Survived	Died
Basic model
Low risk (ER < 3.9)	146 (100)	0 (0.0)	0.0*	<0.0001
Moderate risk (3.9 ≥ ER < 63.9)	111 (73.5)	40 (26.5)	---
High risk (ER ≥ 63.9)	1 (3.8)	25 (96.2)	99.2†
CT model
Low risk (ER < 4.7)	144 (100)	0 (0.0)	0.0*	<0.0001
Moderate risk (4.7 ≥ ER < 51.2)	113 (73.9)	40 (26.1)
High risk (ER ≥ 51.2)	2 (7.7)	24 (92.3)	47.6†

^*, Negative likelihood ratio.

^†, Positive Likelihood ratio.