Table 1. Baseline characteristics according to smoking status.

	Male			Female
	Non-smoker	Past smoker	Current smoker	Non-smoker	Past smoker	Current smoker
	n = 9014	n = 11471	n = 22997	n = 9014	n = 11471	n = 22997
Age (year, mean and SD)	57.0 (10.3)	60.0 (10.1)	56.2 (10.0)	57.0 (10.3)	60.0 (10.1)	56.2 (10.0)
Percent of group
Age (year) at leaving education (%)
-15	27.1	26.2	27.8	27.1	26.2	27.8
16-17	13.7	14.2	14.5	13.7	14.2	14.5
18+	32.2	32.3	31.4	32.2	32.3	31.4
Missing	27.1	27.4	26.3	27.1	27.4	26.3
Alcohol consumption (%)
Teetotal	24.8	16.1	16.8	24.8	16.1	16.8
Habitual	67.4	71.3	75.6	67.4	71.3	75.6
Past habitual	4.6	9.4	4.8	4.6	9.4	4.8
Missing	3.1	3.2	2.9	3.1	3.2	2.9
Preference for salty foods (%)
Like	29.4	31.4	37.8	29.4	31.4	37.8
Normal	39.8	38.4	35.4	39.8	38.4	35.4
Dislike	13.3	10.8	8.5	13.3	10.8	8.5
Missing	17.5	19.4	18.3	17.5	19.4	18.3
Green-tea consumption (%)
Every day	75.4	77.0	77.0	75.4	77.0	77.0
3+ times per week	4.7	3.9	4.5	4.7	3.9	4.5
less than 3 times per week	12.0	10.8	9.9	12.0	10.8	9.9
Missing	7.9	8.4	8.6	7.9	8.4	8.6