|
Maternal age at birth
|
≤19 years
|
529 (1.7 %)
|
48 (7.9 %)
|
322 (6.4 %)
|
p < 0.001
|
647.55
|
|
20–29 years
|
15,660 (50.1 %)
|
365 (59.8 %)
|
2836 (56.2 %)
|
|
30–39 years
|
14,195 (45.4 %)
|
186 (30.5 %)
|
1762 (34.9 %)
|
|
≥40 years
|
886 (2.8 %)
|
11 (1.8 %)
|
123 (2.4 %)
|
|
Paternal age at birtha
|
≤19 years
|
106 (0.3 %)
|
11 (1.9 %)
|
95 (1.9 %)
|
p < 0.001
|
413.72
|
|
20–29 years
|
11,414 (36.8 %)
|
297 (49.9 %)
|
2255 (45.9 %)
|
|
30–39 years
|
16,485 (53.1 %)
|
247 (41.5 %)
|
2160 (44.0 %)
|
|
≥40 years
|
3052 (9.8 %)
|
40 (6.7 %)
|
404 (8.2 %)
|
|
History of maternal psychopathology
|
Yes
|
3321 (10.6 %)
|
92 (15.1 %)
|
927 (18.4 %)
|
p < 0.001
|
258.83
|
|
No
|
27,949 (89.4 %)
|
518 (84.9 %)
|
4116 (81.6 %)
|
|
History of maternal substance abuse
|
Yes
|
357 (1.1 %)
|
22 (3.6 %)
|
368 (7.3 %)
|
p < 0.001
|
837.97
|
|
No
|
30,913 (98.9 %)
|
588 (96.4 %)
|
4675 (92.7 %)
|
|
History of paternal psychopathologya
|
Yes
|
3387 (10.9 %)
|
109 (18.3 %)
|
1101 (22.4 %)
|
p < 0.001
|
528.64
|
|
No
|
27,670 (89.1 %)
|
486 (81.7 %)
|
3813 (77.6 %)
|
|
Previous births
|
0
|
12,557 (40.2 %)
|
381 (62.5 %)
|
2139 (42.4 %)
|
p < 0.001
|
129.23
|
|
≥1
|
18,713 (59.8 %)
|
229 (37.5 %)
|
2904 (57.6 %)
|
|
Weight for gestational ageb
|
<-2 SD
|
716 (2.3 %)
|
16 (2.6 %)
|
285 (5.7 %)
|
p < 0.001
|
219.66
|
|
-2 to +2 SD
|
29,330 (94.1 %)
|
571 (93.9 %)
|
4641 (92.4 %)
|
|
≥ + 2 SD
|
1141 (3.7 %)
|
21 (3.5 %)
|
95 (1.9 %)
|
|
Maternal SES
|
Upper white collar
|
5325 (17.0 %)
|
40 (6.6 %)
|
263 (5.2 %)
|
p < 0.001
|
1179.59
|
|
Lower white collar
|
14,404 (46.1 %)
|
234 (38.4 %)
|
1890 (37.5 %)
|
|
Blue collar
|
4809 (15.4 %)
|
161 (26.4 %)
|
1552 (30.8 %)
|
|
Others
|
4663 (14.9 %)
|
129 (21.2 %)
|
901 (17.9 %)
|
|
Missing
|
2069 (6.6 %)
|
46 (7.5 %)
|
437 (8.7 %)
|
|
Maternal immigrant status
|
Not born in Finland
|
491 (1.6 %)
|
13 (2.1 %)
|
38 (0.8 %)
|
p < 0.001
|
21.91
|
|
Born in Finland
|
30,779 (98.4 %)
|
597 (97.9 %)
|
5005 (99.2 %
|
|
Paternal immigrant statusa
|
Not born in Finland
|
557 (1.8 %)
|
9 (1.5 %)
|
85 (1.7 %)
|
p < 0.841
|
0.35
|
|
Born in Finland
|
30,500 (98.2 %)
|
586 (98.5 %)
|
4829 (98.3 %)
|
|
Apgar score at 1 minc
|
<6
|
1151 (3.7 %)
|
30 (4.9 %)
|
195 (3.9 %)
|
p < 0.229
|
2.95
|
|
7–10
|
30,086 (96.3 %)
|
577 (95.1 %)
|
4841 (96.1 %)
|
|
Gestational age
d
|
≤32 weeks
|
195 (0.6 %)
|
3 (0.5 %)
|
47 (1.0 %)
|
p < 0.029
|
14.11
|
|
33–36 weeks
|
1171 (3.8 %)
|
19 (3.1 %)
|
218 (4.3 %)
|
|
37–41 weeks
|
28,407 (91.0 %)
|
553 (90.8 %)
|
4546 (90.5 %)
|
|
≥42 weeks
|
1431 (4.6 %)
|
34 (5.6 %)
|
212 (4.2 %)
|
