Table 4. Hazard ratios according to cigarette-years in men.

	Person-years	No of aases	Age-adjusted	Multivariate*
			Hazard ratio (95% CI)	Hazard ratio (95% CI)
Non-smoker	89289	87	1.00 (reference)	1.00 (reference)
Past smoker	110972	164	1.22 (0.95 - 1.57)	1.23 (0.96 - 1.59)
Cigarette-years
1 - 399	32443	30	1.36 (0.90 - 2.05)	1.38 (0.91 - 2.08)
400 - 799	107185	114	1.35 (1.03 - 1.77)	1.36 (1.04 - 1.79)
800+	74075	116	1.33 (1.01 - 1.74)	1.31 (1.00 - 1.72)

* : Models included age, smoking, alcohol consumption, educational level, preference for salty foods and green-tea consumption.

CI : confidence interval.