Table 3.

Univariate and multivariate regression model for risk factors of influenza-related adverse events

Variable	Univariate OR (95% CI)	Multivariate OR (95% CI)	p value
Age	0.98 (0.97–0.99)	1.009 (0.99–1.03)	0.3
Congestive heart disease	0.54 (0.29–0.98)	1.25 (0.49–3.17)	0.6
Infection with influenza A	1.2 (0.7–2)	1.72 (0.95–3.13)	0.07
Bone marrow transplant	5.6 (1.2–25)	3.65 (0.69–19.3)	0.1
Chronic kidney disease	2.5 (1.14–5.28)	1.69 (0.65–4.37)	0.3
Hypoalbuminemia*	6 (3.5–11)	5.69 (3.08–10.51)	0.0001
Creatinine level increase**	1.5 (1.2–1.7)	1.34 (1.11–1.63)	0.003

Hosmer-Lemeshow goodness of fit test, p = 0.968, β = − 3.98, n = 502, ROC curve − 0.711

BMT, blood marrow transplantation; CKD, chronic kidney disease

*Albumin level ≤ 3 mg/dL

**Creatinine per 1 g/dL increment