Table 4.

AUCs and Youden index values of different severity assessment methods for predicting 30-day mortality in HAP patients.

Assessment models	AUC	95% CI	Youden index	P
PSI	0.808	0.728–0.889	0.557	<0.001
CURB-65	0.744	0.660–0.827	0.390	<0.001
SOFA	0.856	0.796–0.915	0.546	<0.001
APACHE II	0.863	0.806–0.920	0.562	<0.001
qSOFA	0.767	0.686–0.848	0.442	<0.001

AUC: Area under the curve; HAP: Hospital-acquired pneumonia; CI: Confidence interval; PSI: Pneumonia severity index; CURB-65: Consciousness, urea nitrogen, respiratory rate, blood pressure, and age ≥65 years; SOFA: Sequential Organ Failure Assessment; APACHE II: Acute Physiology and Chronic Health Evaluation II; qSOFA: Quick Sequential Organ Failure Assessment.