Table 1.

Demographics of participants

	Total (N=390)
Age
2	15 (3.9)
3	120 (30.8)
4	164 (42.1)
5	91 (23.4)
Gender
Boys	204 (52.3)
Girls	186 (47.7)
Main caregiver
Mother	363 (93.8)
Father	1 (0.3)
Grandparents	19 (4.9)
Other relatives	2 (0.5)
Else	2 (0.5)
Family structure
Both parents with child	345 (88.5)
One parent with child	5 (1.3)
Grandparent(s) with child	1 (0.3)
Grandparent(s) plus both parents with child	36 (9.2)
Grandparent(s) plus one parent with child	3 (0.8)
Father’s education level
≥12 years	343 (88.2)
9–11 years	42 (10.8)
<9 years	3 (0.8)
Else	1 (0.3)
Mother’s education level
≥12 years	341 (87.4)
9–11 years	46 (11.8)
<9 years	2 (0.5)
Else	1 (0.3)
Father’s employment status (N=386)
Day laborer	3 (0.8)
Employee	65 (16.9)
Owner-operator	54 (14.0)
Office worker	151 (39.1)
Middle manager	76 (19.7)
Professional/ senior manager	21 (5.4)
Artist/ religion worker	10 (2.6)
Housewife/ no employment	6 (1.6)
Mother’s employment status (N=389)
Day laborer	2 (0.5)
Employee	14 (3.6)
Owner-operator	21 (5.4)
Office worker	58 (14.9)
Middle manager	7 (1.8)
Professional/senior manager	26 (2.7)
Artist/ religion worker	13 (3.3)
Housewife/no employment	248 (63.8)
Income per month
<₩1,000,000	6 (1.5)
₩1,000,000–2,000,000	20 (5.1)
₩2,000,000–4,000,000	172 (44.1)
₩4,000,000–6,000,000	124 (31.8)
≥₩6,000,000	68 (17.4)

Data represent N (%)