Table 5.

Odds ratio for depression according to duration of smoking cessation among former smokers in men

	Duration of smoking cessation
	< 5 years (n = 636)	5-9 years (n = 436)	10-19 years (n = 640)	≧ 20 years (n = 760)
Men
Unadjusted	1.00 (Reference)	0.92 (0.52-1.64)	1.48 (0.74-2.94)	1.83 (0.96-3.50)
Multivariate-adjusted*	1.00 (Reference)	0.71 (0.37-1.34)	1.32 (0.60-2.88)	0.92 (0.39-2.14)

Data are presented as mean (standard error) or odds ratio (95% confidence interval).

*Adjusted for age, income status, education status, marital status, job status, drinking status, pack-years, BMI, physical activity, Hypertension, Diabetes mellitus, and Cerebrovascular disease.