Total | Urban a | Rural b | p-value c | |||
---|---|---|---|---|---|---|
n | n | % | n | % | c | |
Parental educational level (highest school grade): | ||||||
Low (less than grade 10) | 1380 | 997 | 5.7 | 383 | 5.8 | |
Middle (grade 10) | 11113 | 7730 | 44.4 | 3383 | 50.9 | <.0001 |
High (more than grade 10) | 11586 | 8700 | 50.0 | 2886 | 43.4 | |
Mother and father not in paid employment | 738 | 599 | 14.6 | 139 | 10.2 | <.0001 |
Small living space (per-capita < 20 m2) | 13570 | 10133 | 56.9 | 3437 | 50.5 | <.0001 |
Damp housing condition | 2617 | 2115 | 12.1 | 502 | 7.5 | <.0001 |
Single oven heating at child's home | 8617 | 6725 | 40.4 | 1892 | 29.5 | <.0001 |
Living at busy road (distance < 50 m to traffic) | 14482 | 10812 | 62.0 | 3670 | 55.3 | <.0001 |