Table 1.

Demographic data describing subjects

Variables		No.	%
Gender	Female	127	48.6
	Male	120	51.4
	Total	247	100
Age (y)	18	7	2.8
	19	19	7.7
	20	47	19.0
	21	47	19.0
	22	41	16.6
	23	32	13.0
	24	21	8.5
	25	11	4.5
	26	7	2.8
	27	4	1.6
	28	4	1.6
	29	4	1.6
	30	3	1.2
	Total	247	100