Table 5.

Risk Factors for Viral and Bacterial Coinfection CAP

	Risk factors	V-CAP (n = 98)	P Value	B-CAP (n = 968)	P Value
VBC- CAP (n = 57)	Prehospital antibiotics	0.117 (0.024–0.571)	.008	0.160 (0.035–0.733)	.018
	Acute onset	0.241 (0.055–1.054)	.059	0.424 (0.117–1.539)	.192
	Purulent sputum	2.141 (1.02 – 3.241)	.050	2.313 (1.072–4.992)	.033
	Empirical oseltamivir	0.401 (0.401–0.972)	.043	19.489 (9.09–41.742)	<.001
	Severity criteriaa	2.715 (0.959–7.688)	.060	5.219 (2.130–12.788)	<.001

Abbreviations: B-CAP, bacterial community-acquired pneumonia; CAP, community-acquired pneumonia; V-CAP, viral CAP; VBC-CAP, viral and bacterial coinfection CAP.

^aSeverity criteria (intensive care unit admission, mechanical ventilation, shock, and vasoactive drugs) were grouped into one after the multicollinearity study for a correlation coefficient >0.6.