Table 3.

Sensitivity, specificity, positive predictive value, and negative predictive value of RTS, Marshall score, and RTS–Marshall combination to unfavorable GOS

	RR	Sensitivity, %	Specificity, %	PPV, %	NPV, %	Accuracy, %
RTS	2.9	64.8	78.2	65.7	77.5	72.9
Marshall score	3.9	71.8	80.9	70.8	81.7	77.3
Combination of both	4.5	84.5	64.5	60.7	86.6	72.4

Abbreviations: GOS, Glasgow Outcome Scale; NPV, negative predictive value; PPV, positive predictive value; RTS, Revised Trauma Score.