Table 1.

Socio-demographic characteristics of participants (N = 404).

Characteristics		Number (persons)	percent (%)
Sex	Male	147	36.4
	Female	257	63.6
Age	18	5	1.2
	19	47	11.6
	20	88	21.8
	21	78	19.3
	22	75	18.6
	23	62	15.3
	24	31	7.7
	25	10	2.5
	26	6	1.5
	27	2	0.5
College year	Freshman	28	6.9
	Sophomore	141	34.9
	Junior	143	35.4
	Senior	92	22.8
Habits	0–3 months	166	41.1
	3–6 months	95	23.5
	6–12 months	43	10.6
	12–18 months	18	4.5
	More than18 months	82	20.3