Table 1.

Character of included subjects.

Variable		Frequency	Percent
Gender	Male	978	42.30
	Female	1335	57.70
Age (year)	19	162	7.00
	20	720	31.10
	21	845	36.50
	22	442	19.10
	23	144	6.20
Body type	Underweight	505	21.80
	Normal	1564	67.60
	Overweight	196	8.50
	Obesity	48	2.10