Table 1. Baseline chacteristics of subjects by level of alcohol consumption.

	All Subjects	Never drinkers	Ever drinkers	Current drinkers (ethanol intake)			Ex-drinkers
				≤24.9 g/day	25.0-49.9 g/day	≥50.0 g/day
Number of subjects	28,536	5,716	22,820	10,244	7,511	3,112	1,953
Mean age (year)	57.3	59.2	56.8	57.2	56.1	53.8	62.7
Smoking (%)
Current	52.5	47.7	53.7	47.4	59.1	68.2	43.1
Past	26.4	22.6	27.3	28.5	26.0	19.1	39.6
Never	21.1	29.7	19.0	24.1	15.0	12.8	17.3
Daily dietary consumption (%)
Green leafy vegetables	29.5	30.0	29.4	29.2	29.6	26.9	33.5
Oranges	26.6	33.4	24.9	27.2	23.1	18.1	31.3
Fruits other than oranges	27.2	32.5	26.0	28.1	24.1	19.6	31.9
Family history of lung cancer (%)	2.0	2.1	2.0	2.0	2.1	2.2	1.5
Past history (%)
Stroke	2.0	2.0	2.0	1.7	1.3	0.8	7.9
Myocardial infarction	2.8	3.2	2.7	2.6	2.2	2.3	5.9
Liver disease	7.8	6.4	8.2	7.3	7.1	8.9	16.3
Diabetes	6.4	6.1	6.5	6.3	5.4	6.0	12.5