Table 1:

Numbers of Planned vs. Actual Samples determined by considering sex, age, and drinking frequencies of subjects

	Male Subjects				Female Subjects
Age (yr)	Ratio of Population	Monthly drinking rate	Planned Number of Samples	Actual Number of Samples	Ratio of Population	Monthly drinking rate	Planned Number of Samples	Actual Number of Samples
20s	0.23	0.769	164	162	0.21	0.566	106	111
30s	0.24	0.800	183	186	0.24	0.506	107	107
40s	0.27	0.793	202	204	0.28	0.529	130	131
50s	0.26	0.744	183	179	0.27	0.421	102	105
Total			732	731			445	454