Serum activin A as a prognostic biomarker for community acquired pneumonia

Table 2 Areas under the curve and thresholds for predicting hospital mortality in patients with community-acquired pneumonia

	Threshold	Sensitivity (%)	Specificity (%)	AUC	P value	95%CI
CRP	> 84	80.65	59.12	0.722	0.0008	0.587-0.811
PCT	> 2.31	57.36	87.91	0.682	0.0005	0.601-0.824
CURB-65	> 1	73.66	81.02	0.846	< 0.0001	0.725-0.914
PSI	> 108	76.08	80.36	0.85	< 0.0001	0.748-0.937
Activin A (ng/mL)	> 19	83.27	81.44	0.854	< 0.0001	0.787-0.941

AUC: Areas under the curve; CRP: C-reactive protein; PCT: Procalcitonin; CURB-65: Confusion, urea, respiratory rete, blood pressure, and age ≥ 65 years old; PSI: Pneumonia Severity Index.