Table 2.

Multivariate regression analysis adjusted for sex, smoking status, and age.

Characteristic	OR	95% CI	P
Female sex	Ref.	-
Male sex	19.946	6.531–60.914	<0.001
Age
≤60 years	Ref.	-
≥75 years	2.670	1.289–5.529	0.008
60–75 years	1.293	0.733–2.281	0.376
Never smoker	Ref.	-
Current smoker	6.588	2.119–20.483	0.001

OR: odds ratio; CI: confidence interval.