TABLE 3.

Multivariate logistic regression analysis of hospitalization risk factors

Variable	Odds ratio (95% CI)	P value
Age	1.04 (1.03–1.05)	<0.01
Body mass index	1.01 (0.97–1.04)	0.78
Current smoking	0.83 (0.57–1.22)	0.34
Diabetes mellitus	0.72 (0.50–1.04)	0.08
Chronic heart diseases	2.16 (1.44–3.24)	<0.01
Chronic lung diseases	2.84 (1.64–4.94)	<0.01
Chronic renal diseases	1.96 (1.06—3.60)	0.03
Cerebrovascular diseases	1.27 (0.77–2.11)	0.36
Influenza vaccination	0.65 (0.48–0.88)	<0.01
Pneumococcal vaccination	1.01 (0.68–1.52)	0.95