Table 1 Characteristics of 57,884 women who delivered at term (39 + 0–41 + 6 gestational weeks) or post-term (42 + 0–44 + 6 gestational weeks)
From: Cerebral disorders in the first 7 years of life in children born post-term: a cohort study
At term | Post-term | |||
|---|---|---|---|---|
n | % | N | % | |
Total | 51,268 | 100.0 | 6616 | 100.0 |
Maternal age | ||||
10–25 | 8846 | 17.3 | 1159 | 17.5 |
26–30 | 22,360 | 43.6 | 2862 | 43.3 |
31–35 | 15,696 | 30.6 | 2004 | 30.3 |
36–50 | 4366 | 8.5 | 591 | 8.9 |
P = 0.616 | ||||
Parity | ||||
0 | 24,596 | 48.0 | 3670 | 55.5 |
1 | 18,469 | 36.0 | 1971 | 29.8 |
2 | 6720 | 13.1 | 796 | 12.0 |
3 | 1217 | 2.4 | 146 | 2.2 |
4+ | 238 | 0.5 | 29 | 0.4 |
Missing | 28 | 0.1 | 4 | 0.1 |
P = 0.000 | ||||
Pre-pregnancy BMI | ||||
< 18.5 | 2294 | 4.5 | 219 | 3.3 |
18.5 - < 25 | 35,359 | 69.0 | 4201 | 63.5 |
25 - < 30 | 9329 | 18.2 | 1442 | 21.8 |
> 30 | 3474 | 6.8 | 627 | 9.5 |
Missing | 812 | 1.6 | 127 | 1.9 |
P = 0.000 | ||||
Child’s sex | ||||
Male | 25,788 | 50.3 | 3484 | 52.7 |
Female | 25,479 | 49.7 | 3132 | 47.3 |
Missing | 1 | 0.0 | 0 | 0.0 |
P = 0.001 | ||||
Socio-occupational status | ||||
High | 27,109 | 52.9 | 3511 | 53.1 |
Medium | 19,206 | 37.5 | 2478 | 37.5 |
Low | 4764 | 9.3 | 606 | 9.2 |
Missing | 189 | 0.4 | 21 | 0.3 |
P = 0.902 | ||||
Smoking | ||||
Yes | 7423 | 14.5 | 927 | 14.0 |
No, but partner smoking | 7547 | 14.7 | 1057 | 16.0 |
No | 24,839 | 48.4 | 3165 | 47.8 |
Missing | 11,459 | 22.4 | 1467 | 22.2 |
P = 0.054 | ||||
39 + 0–41 + 6 | 42 + 0–44 + 6 | |||
n | % | N | % | |
Maternal epilepsy, medicated | ||||
Yes | 113 | 0.2 | 11 | 0.2 |
No | 39,723 | 77.5 | 5140 | 77.7 |
Missing | 11,432 | 22.3 | 1465 | 22.1 |
P = 0.638 | ||||
Psychiatric disorder | ||||
Yes | 3869 | 7.5 | 467 | 7.1 |
No | 47,357 | 92.4 | 6144 | 92.9 |
Missing | 42 | 0.1 | 5 | 0.1 |
P = 0.364 | ||||
Alcohol consumption during pregnancy | ||||
Yes | 9351 | 18.2 | 1199 | 18.1 |
No | 30,393 | 59.3 | 3939 | 59.5 |
Missing | 11,524 | 22.5 | 1478 | 22.3 |
P = 0.924 | ||||
Fever during pregnancy | ||||
Yes | 11,138 | 21.7 | 1390 | 21.0 |
No | 36,898 | 72.0 | 4848 | 73.3 |
Missing | 3232 | 6.3 | 378 | 5.7 |
P = 0.049 | ||||
Folic acid consumption during pregnancy | ||||
Yes | 12,070 | 23.5 | 1567 | 23.7 |
No | 36,223 | 70.7 | 4707 | 71.1 |
Missing | 175 | 0.3 | 12 | 0.2 |
P = 0.062 | ||||