Table 6.

Proposed Regression Models with Simplified Coefficients

Logit (Ps) of each model	AUROCC JTDB derivation data	AUROCC JTDB validation data	AUROCC Khon Kaen registry data
-9 + cISS - cAGE + cSBP + cGCS + cRR/2	0.9635	0.9640	0.9619
-7 + cISS - cAGE + cSBP + cGCS	0.9633	0.9622	0.9601
-7 + cAGE + cSBP + cGCS + cRR/2	0.9503	0.9524	0.9115

AUROCC: The area under the receiver-operating characteristic curve,

cAGE: coded value of age, cBP: coded value of systolic blood pressure,

cGCS: coded value of the Glasgow Coma Scale score, cRR: coded value of respiratory rate,

cISS: coded value of the Injury Severity Score