|
Maternal age at birth
|
≤19 years
|
672 (6.7 %)
|
899 (2.4 %)
|
p < 0.001
|
603.69
|
|
20–29 years
|
5711 (56.5 %)
|
18,861 (51.1 %)
|
|
30–39 years
|
3475 (34.4 %)
|
16,143 (43.7 %)
|
|
≥40 years
|
254 (2.5 %)
|
1020 (2.8 %)
|
|
Paternal age at birtha
|
≤19 years
|
211 (2.2 %)
|
212 (0.6 %)
|
p < 0.001
|
330.41
|
|
20–29 years
|
4322 (44.2 %)
|
13,966 (38.2 %)
|
|
30–39 years
|
4358 (44.5 %)
|
18,892 (51.7 %)
|
|
≥40 years
|
896 (9.2 %)
|
3496 (9.6 %)
|
|
History of maternal psychopathology
|
Yes
|
2610 (25.8 %)
|
4340 (11.8 %)
|
p < 0.001
|
1154.75
|
|
No
|
7502 (74.2 %)
|
32,583 (88.3 %)
|
|
History of maternal substance abuse
|
Yes
|
685 (6.8 %)
|
747 (2.0 %)
|
p < 0.001
|
525.72
|
|
No
|
9427 (93.2 %)
|
36,176 (98.0 %)
|
|
History of paternal psychopathologya
|
Yes
|
2382 (24.3 %)
|
4597 (12.6 %)
|
p < 0.001
|
779.19
|
|
No
|
7405 (75.7 %)
|
31,969 (87.4 %)
|
|
Previous births
|
0
|
4683 (46.3 %)
|
15,077 (40.8 %)
|
p < 0.001
|
98.03
|
|
≥1
|
5429 (53.7 %)
|
21,846 (59.2 %)
|
|
Weight for gestational ageb
|
<-2 SD
|
569 (5.6 %)
|
1017 (2.8 %)
|
p < 0.001
|
189.09
|
|
-2 to +2 SD
|
9167 (91.0 %)
|
34,542 (93.8 %)
|
|
≥ + 2 SD
|
338 (3.4 %)
|
1257 (3.4 %)
|
|
Maternal SES
|
Upper white collar
|
861 (8.5 %)
|
5628 (17.7 %)
|
p < 0.001
|
593.56
|
|
Lower white collar
|
3986 (39.4 %)
|
6522 (15.2 %)
|
|
Blue collar
|
2439 (24.1 %)
|
16,528 (44.8 %)
|
|
Others
|
1959 (19.4 %)
|
5693 (15.4 %)
|
|
Missing
|
867 (8.6 %)
|
2552 (6.9 %)
|
|
Maternal immigrant status
|
Not born in Finland
|
223 (2.2 %)
|
542 (1.5 %)
|
p < 0.001
|
26.04
|
|
Born in Finland
|
9889 (97.8 %)
|
36,381 (98.5 %)
|
|
Paternal immigrant statusa
|
Not born in Finland
|
368 (3.8 %)
|
651 (1.8 %)
|
p < 0.001
|
136.41
|
|
Born in Finland
|
9419 (96.2 %)
|
35,915 (98.2 %)
|
|
Apgar score at 1 minc
|
<6
|
537 (5.3 %)
|
1376 (3.7 %)
|
p < 0.001
|
48.65
|
|
7–10
|
9565 (94.7 %)
|
35,504 (96.3 %)
|
|
Gestational age
|
≤32 weeks
|
224 (2.2 %)
|
245 (0.7 %)
|
p < 0.001
|
219.24
|
|
33–36 weeks
|
564 (5.6 %)
|
1408 (3.8 %)
|
|
37–41 weeks
|
8833 (87.6 %)
|
33,506 (91.0 %)
|
|
≥42 weeks
|
460 (4.6 %)
|
1677 (4.5 %)
|
