Table 1.

Profile of respondent characteristics.

Demographics	Item	Subjects
		Frequency	Percentage
Gender	Male	114	51.8
	Female	106	48.2
Age	20–29	40	18.2
	30–39	119	54.1
	40–49	32	14.5
	>49	29	13.2
Marriage	Married	104	47.3
	Single	116	52.7
Monthly income	<3,000,000 Won	65	29.5
	3,000,000–<4,000,000 Won	35	15.9
	4,000,000–<5,000,000 Won	28	12.7
	5,000,000–<6,000,000 Won	24	10.9
	6,000,000–<7,000,000 Won	20	9.1
	7,000,000–<8,000,000 Won	17	7.7
	≥8,000,000 Won	31	14.1
Education level	High school or below	31	14.1
	College	167	75.9
	Graduate school or above	22	10.0