Table 4.

ROC curves of severity scores in association with 30-day mortality

	AUC	SE	Z-value*	95% CI
CRB-65	0.82	0.02	15.4	0.77 to 0.85
DS CRB-65	0.87	0.02	22.6	0.84 to 0.90

*To test AUC >0.5.

AUC, area under the curve; ROC, receiver operating characteristic.