Table 3.

Logistic regression analyses of factors related to OLD

Variables	OR	95% CI	P-value
Age, years
20–39	1.000
40–59	6.196	5.102–7.525	,0.001
60+	27.402	17.135–43.820	,0.001
Sex, male	2.159	1.628–2.864	,0.001
Smoking status
Never smoker	1.000
Ex-smoker	2.227	1.569–3.300	,0.001
Current smoker	2.016	1.517–2.680	,0.001
NAFLD	1.334	1.108–1.607	0.002

Note: Values are presented as ORs with 95% CIs.

Abbreviations: OLD, obstructive lung disease; OR, odds ratio; CI, confidence interval; NAFLD, non-alcoholic fatty liver disease.