Table 4.

Multivariable logistic regression model for ventilation (viruses compared to A/H1) N = 549

Outcome variable	Independent variable (IV; n = number of patients with IV ventilated/number of patients with IV in model)	Unadjusted OR (95% CI)	Unadjusted P-value	Adjusted OR (95% CI)	Adjusted P-value
Ventilation (n = 37)	Virus (reference: A/H1) (n = 10/63)
	A/H3 (n = 11/173)	0.360 (0.145–0.894)	0.028	0.464 (0.180–1.197)	0.112
	INF-B (n = 6/72)	0.481 (0.164–1.411)	0.183	0.562 (0.189–1.674)	0.301
	hMPV (n = 1/80)	0.067 (0.008–0.540)	0.011	0.080 (0.010–0.647)	0.018
	PIV (n = 4/66)	0.342 (0.101–1.154)	0.084	0.426 (0.123–1.473)	0.178
	RSV (n = 5/95)	0.294 (0.096–0.908)	0.033	0.379 (0.120–1.199)	0.099
	Female (n = 15/269)	0.667 (0.497–0.896)	0.007	0.709 (0.355–1.417)	0.330
	Age group (reference: 18–49 years, n = 12/127)
	50–64 years (n = 13/146)	0.939 (0.657–1.341)	0.729	0.969 (0.416–2.257)	0.942
	65+ years (n = 12/276)	0.465 (0.327–0.660)	<0.001	0.506 (0.214–1.195)	0.120