Table 3 Demographic characteristics of respondents

Category		N	%
Gender	Male	37	34.6
	Female	70	65.4
Age	≤40s	32	29.9
	50s	25	23.4
	60s	22	20.5
	≥70s	28	26.2
Education attainment	Less than middle school	46	43.0
	High school graduate	45	42.1
	More than college degree	16	14.9
Occupation	Housewife	44	41.1
	Self-employed worker	30	28.0
	Company worker	16	15.0
	Inoccupation(incl. retiree)	12	11.2
	Other	5	4.7
Monthly income (won)	≤ 2 million	54	50.5
	2~4 million	37	34.6
	≥ 4 million	16	14.9
Dwelling type	Detached	54	50.5
	Multi-user	35	32.7
	Apartment	17	15.9
	Other	1	0.9
Dwelling period	≤10 years	30	28.0
	11~20 years	20	18.7
	21~30 years	19	17.8
	≥31s years	38	35.5