Mean (SD) | |
---|---|
Maternal age (years) | 29.8 (4.6) |
Gestational age at birth (weeks) | 39.34 (2.26) |
Maternal depression and anxiety in early pregnancy (range 1 to 4) | 1.26 (0.40) |
Maternal education | N (% total) |
≤9 years education | 2,782 (2.6%) |
1 to 2 years high schooling | 4,944 (4.6%) |
3 years schooling | 26,854 (25.0%) |
1 to 4 college/university | 39,388 (36.7%) |
>4 years college/university | 22,579 (21.0%) |
Missing | 10,832 (10.1%) |
Maternal alcohol consumption | N (% total) |
Never | 74,702 (69.6%) |
<1 episode per month | 8,615 (8.0%) |
1 to 3 episodes per month | 1,995 (1.9%) |
<1 episode per week | 429 (0.4%) |
2 to 3 episodes per week | 61 (0.1%) |
4 to 5 episodes per week | 7 (0.0%) |
6 to 7 episodes per week | 15 (0.0%) |
Missing data | 21,555 (20.1%) |
Maternal parity | N (% total) |
0 | 47,515 (44.2%) |
1 | 38,188 (35.6%) |
2 | 16,443 (15.3%) |
3 | 3,610 (3.4%) |
4+ | 1,132 (1.1%) |
Missing data | 492 (0.5%) |
Paternal smoking (early pregnancy) | N (% total) |
Yes | 25,039 (23.3%) |
No | 76,079 (70.9%) |
Missing data | 6,261 (5.8%) |
Internalizing symptoms (range 1 to 3) | Mean (SD) |
18 months (n = 69,946) | 1.27 (0.25) |
36 months (n = 57,143) | 1.25 (0.22) |
5 years (n = 19,778) | 1.16 (0.19) |