Index group | Reference group | ||||
---|---|---|---|---|---|
n | % | n | % | p-value | |
Age when giving birth | 0.047 | ||||
<25 | 33 | 18.2 | 103 | 23.9 | |
25-34 | 127 | 70.6 | 257 | 59.6 | |
35- | 21 | 11.6 | 71 | 16.5 | |
BMI | 0.016 | ||||
<25.0 | 96 | 61.9 | 226 | 63.1 | |
25-29.9 | 30 | 19.4 | 95 | 26.5 | |
≥30.0 | 29 | 18.7 | 37 | 10.3 | |
Missing | 16 | 73 | |||
Employment group | 0.047 | ||||
High white collar worker | 22 | 12.2 | 25 | 5.8 | |
Low white collar worker | 77 | 42.5 | 198 | 46.0 | |
Blue collar worker | 32 | 17.7 | 101 | 23.5 | . |
Unemployed | 13 | 7.2 | 24 | 5.6 | |
Other* | 37 | 20.4 | 82 | 19.1 | |
Smoking | 0.665 | ||||
Yes | 35 | 19.3 | 90 | 20.9 | |
No | 146 | 80.7 | 341 | 79.1 | |
Induced abortion | 0.212 | ||||
No | 144 | 79.6 | 361 | 83.8 | |
Yes | 37 | 20.4 | 70 | 16.2 | |
Spontaneous abortion | 0.162 | ||||
No | 164 | 90.6 | 373 | 86.5 | |
Yes | 17 | 9.4 | 58 | 13.5 |