Mother's exposure | Father's exposure | |||||
---|---|---|---|---|---|---|
<4 h | 4–24 h | >24 h | <4 h | 4–24 h | >24 h | |
Total births (n) | 772790 | 58265 | 5420 | 1128986 | 114000 | 47312 |
Education (y, %): | ||||||
<10 | 13.2 | 22.1 | 38.0 | 19.0 | 24.3 | 29.6 |
10–12 | 52.0 | 54.7 | 52.8 | 50.8 | 61.8 | 59.6 |
>12 | 34.3 | 22.8 | 8.4 | 29.7 | 13.3 | 10.3 |
No education | 0.005 | 0 | 0 | 0.01 | 0.02 | 0.04 |
Unknown | 0.4 | 0.5 | 0.8 | 0.4 | 0.6 | 0.6 |
Place of birth (%): | ||||||
Oslo or Akershus | 21.8 | 24.9 | 6.6 | 20.3 | 14.5 | 7.7 |
Hordaland | 9.9 | 11.6 | 17.2 | 10.5 | 11.9 | 12.6 |
Sør-Trøndelag | 6.4 | 4.7 | 3.8 | 6.1 | 5.1 | 5.0 |
Others | 61.9 | 58.9 | 72.4 | 63.1 | 68.5 | 74.7 |
Age of mother (%): | ||||||
≤20 | 5.2 | 8.4 | 12.2 | 6.5 | 8.8 | 9.9 |
21–25 | 28.8 | 37.2 | 41.1 | 31.1 | 36.6 | 36.1 |
26–30 | 36.4 | 35.0 | 29.0 | 35.4 | 33.1 | 31.7 |
31–35 | 21.5 | 15.0 | 12.8 | 19.2 | 15.4 | 15.7 |
>35 | 8.0 | 4.4 | 5.0 | 7.9 | 6.0 | 6.6 |
Year of birth (%): | ||||||
1967–75 | 28.5 | 40.8 | 42.0 | 39.0 | 40.8 | 43.8 |
1976–85 | 35.5 | 36.4 | 31.4 | 33.2 | 31.1 | 31.3 |
1986–95 | 36.0 | 22.8 | 26.6 | 27.8 | 28.1 | 24.9 |