Serum activin A as a prognostic biomarker for community acquired pneumonia

Table 3 Prognostic effect of activin A for hospital mortality in Cox proportional hazards regression analysis

Variables	Univaritate analysis		Multivaritate analysis
	HR (95%CI)	P value	HR (95%CI)	P value
Age	1.112 (1.000-1.064)	0.0624
Sex	0.881 (0.343-2.106)	0.5751
Smoking	1.113 (0.551-2.471)	0.9931
WBC	1.127 (0.931-1.202)	0.3428
CRP	1.103 (1.012-1.206)	0.0661
PCT	1.045 (1.023-1.057)	0.0232
CURB-65	2.157 (1.512-3.104)	< 0.0001
PSI	1.018 (1.005-1.037)	< 0.0001	1.024 (1.012-1.047)	< 0.0001
Activin A	1.024 (1.011-1.028)	< 0.0001	1.028 (1.014-1.031)	< 0.0001

WBC: White blood cell; CRP: C-reactive protein; PCT: Procalcitonin; CURB-65: Confusion, urea, respiratory rete, blood pressure, and age ≥ 65 years old; PSI: Pneumonia Severity Index.