Table 3.
Demographic characteristics

Variable	Sortation	Frequency (Person)	Percentage (%)
Gender	Man	632	51.5
	Woman	594	48.5
Total		1,226	100.0
Age	14~19(10s)	68	5.5
	20~29(20s)	216	17.6
	30~39(30s)	240	19.6
	40~49(40s)	282	23.0
	50~59(50s)	277	22.6
	60s or older	143	11.7
Total		1,226	100.0
Occupation	Professional occupation	138	11.3
	Public officials and teachers	311	25.4
	Production position	44	3.6
	Student	119	9.7
	Housewife	132	10.8
	Technical office position	204	16.6
	Service sales business	54	4.4
	Self-employment	68	5.5
	Agriculture, forestry, livestock, fishing	3	0.2
	Not employed	93	7.6
	Other	60	4.9
Total		1,226	100.0
Income	Less than a million won	203	16.6
	More than 1 million won ~ under 2 million won	200	16.3
	More than 2 million won ~ under 3 million won	341	27.8
	More than 3 million won ~ under 4 million won	228	18.6
	More than 4 million won ~ under 5 million won	132	10.8
	More than 5 million won	122	10.0
Total		1,226	100.0
Residence period	Less than 5 years	96	7.8
	More than 5 years to less than 10 years	117	9.5
	More than 10 years to less than 15 years	146	11.9
	More than 15 years to less than 20 years	130	10.6
	More than 20 years	737	60.1
Total		1,226	100.0