Table 1.

Distribution of enrolled subjects by age group and gender

Age group	Female		Male		Total
	n	%	n	%	n	%
18-26	137	34.1	226	16.6	363	20.5
27-35	81	20.2	271	19.9	352	20.0
36-45	85	21.1	439	32.2	524	29.7
46-55	82	20.4	304	22.3	386	21.9
56-65	17	4.2	122	9	139	7.9
Total	402		1362		1764

Chi-square = 69.8; p < 0.001