Table 1. Statistical analysis of the sample (n=307)

Division		Frequency	%
Gender	Male	130	42.3
	Female	177	57.7
Age	<20	4	1.3
	20-29	161	52.4
	30-39	99	32.2
	40-49	9.8	30
	>50	13	4.2
Job	Student	121	39.4
	Employee	79	25.7
	Public official	38	12.4
	Professional official	27	8.8
	Private business	42	13.7
Educational	High school graduate	4	1.3
	College students	124	40.4
	College graduate	97	31.6
	Graduate school students	45	14.7
	Graduate school graduate	37	12.1
Income (M)	<1,000,000 KRW	71	23.1
	1,000,000-2,000,000 KRW	113	36.8
	2,000,000-3,000,000KRW	56	18.2
	3,000,000-4,000,000KRW	44	14.3
	>4,000,000 KRW	23	7.5
Total		307	100