Table 1. Demographic characteristics of the respondents

Category	Variable	Frequency (n)	Percentage (%)
Gender	Male	139	50.5
	Female	136	49.5
Age	20–29	162	58.9
	30–39	74	26.9
	40–49	23	8.4
	50–59	6	2.2
	Over 60	7	2.5
Education	High school or below	5	1.8
	High school graduate	20	7.3
	College student	115	41.8
	College graduate	83	30.2
	Graduate school or above	52	18.9
Occupation	Student	114	41.5
	Office/administrative	29	10.5
	Homemaker	8	2.9
	Professional	88	32.0
	Technical worker	5	1.8
	Sales/service	15	5.5
	Self-employed/business owner	10	3.6
	Agriculture/forestry/fishery	1	0.4
	Unemployed	3	1.1
	Others	2	0.7
Monthly income	Less than KRW 1 million	46	16.7
	KRW 1–2 million	48	17.5
	KRW 2–3 million	60	21.8
	KRW 3–4 million	35	12.7
	KRW 4–5 million	13	4.7
	Over KRW 5 million	10	3.6
	No monthly income	62	22.5
Monthly allowance	Less than KRW 100,000	15	5.5
	KRW 100,000–200,000	18	6.5
	KRW 200,000–300,000	32	11.6
	KRW 300,000–400,000	22	8.0
	Over KRW 400,000	39	14.2
Dining-out expenditure	Less than KRW 100,000	38	13.8
	KRW 100,000–200,000	89	30.2
	KRW 200,000–300,000	79	28.7
	KRW 300,000–400,000	45	16.4
	Over KRW 400,000	29	10.5
Total		275	100