Table 1.

Age distribution of the subjects used in this study

		Groups
Chinese			Caucasian
sex	Age (yr)	Number of subjects	sex	Age (yr)	Number of subjects
male	21	1	male	21	1
male	22	8	male	22	8
male	23	11	male	23	8
male	24	12	male	24	8
male	25	13	male	25	3
male	26	10	male	26	0
male	27	5	male	27	4
male	28	2	male	28	2
male	29	1	male	29	1

Mean±S.D.(yr) of Chinese group= 24.49±1.76

Mean±S.D.(yr) of Caucasian group= 24.03±2.06