Background
Methods
Data collection
Interventions
Neonatal and maternal outcomes
Maternal and neonatal characteristics
Data analysis
Results
Baseline characteristics
GR | FR | DR | OV | FL | GD | UT | NH | ZH | ZL | NB | LB | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Total n | 19,441 | 22,568 | 15,875 | 42,869 | 17,461 | 71,286 | 52,893 | 105,948 | 139,573 | 11,327 | 84,187 | 31,302 |
Parity, % | ||||||||||||
Nulliparous | 45.8 | 42.4 | 42.7 | 42.1 | 41.4 | 43.4 | 44.7 | 46.8 | 45.7 | 42.8 | 45.8 | 47.2 |
Multiparous | 54.2 | 57.6 | 57.3 | 57.9 | 58.6 | 56.6 | 55.3 | 53.2 | 54.3 | 57.2 | 54.2 | 52.8 |
Maternal age, % | ||||||||||||
< 20 years | 1.9 | 1.5 | 1.6 | 1.2 | 2.2 | 1.2 | 0.8 | 1.0 | 1.5 | 1.6 | 1.0 | 1.6 |
20–24 years | 12.4 | 11.5 | 11.6 | 10.0 | 13.9 | 10.0 | 7.5 | 8.4 | 11.7 | 15.2 | 8.7 | 10.6 |
25–29 years | 31.2 | 34.8 | 35.4 | 33.4 | 33.9 | 31.6 | 26.7 | 26.2 | 30.3 | 33.9 | 31.5 | 32.2 |
30–34 years | 35.4 | 35.1 | 34.2 | 38.0 | 32.3 | 37.5 | 40.6 | 38.2 | 35.6 | 33.1 | 39.8 | 37.8 |
35–39 years | 16.1 | 14.5 | 14.7 | 14.9 | 14.6 | 16.6 | 20.9 | 21.6 | 17.4 | 13.6 | 16.5 | 15.2 |
≥40 years | 2.9 | 2.7 | 2.5 | 2.4 | 3.0 | 3.1 | 3.6 | 4.5 | 3.5 | 2.7 | 2.5 | 2.7 |
Ethnic background, % | ||||||||||||
Dutch | 85.7 | 90.7 | 89.9 | 86.2 | 65.4 | 85.6 | 77.5 | 67.1 | 65.4 | 87.2 | 80.1 | 82.7 |
Non-Dutch | 14.3 | 9.3 | 10.1 | 13.8 | 34.6 | 14.4 | 22.5 | 32.9 | 34.6 | 12.8 | 19.9 | 17.3 |
Urbanisation, % | ||||||||||||
Urban | 18.0 | 4.6 | 0.0 | 2.9 | 0.0 | 3.8 | 23.0 | 39.8 | 41.7 | 0.0 | 9.0 | 2.5 |
Intermediate | 49.2 | 47.0 | 53.6 | 71.3 | 72.5 | 71.4 | 59.6 | 49.1 | 45.0 | 53.3 | 70.0 | 69.7 |
Rural | 32.9 | 48.5 | 46.4 | 25.9 | 27.5 | 24.8 | 17.4 | 11.1 | 13.3 | 46.7 | 21.0 | 27.8 |
Socioeconomic status, % | ||||||||||||
High (p ≥ 75) | 9.3 | 11.8 | 19.4 | 16.9 | 39.2 | 19.1 | 35.7 | 23.5 | 25.5 | 7.4 | 20.0 | 8.7 |
Medium (p 25–75) | 31.5 | 34.8 | 40.5 | 51.4 | 36.8 | 56.0 | 38.8 | 39.0 | 39.1 | 60.3 | 55.8 | 58.4 |
Low (p ≤ 25) | 59.2 | 53.4 | 40.0 | 31.7 | 24.1 | 24.9 | 25.4 | 37.5 | 35.4 | 32.2 | 24.1 | 32.9 |
Gestational age (weeks), % | ||||||||||||
37 + 0–37 + 6 | 8.7 | 8.3 | 9.2 | 8.6 | 8.4 | 6.7 | 5.8 | 6.6 | 7.6 | 6.5 | 7.3 | 8.8 |
38 + 0–40 + 6 | 71.5 | 71.7 | 72.5 | 72.1 | 73.1 | 71.6 | 71.2 | 72.2 | 72.8 | 71.6 | 72.4 | 73.9 |
41 + 0–41 + 6 | 17.9 | 18.1 | 16.9 | 17.4 | 16.9 | 19.3 | 20.7 | 19.0 | 18.3 | 19.4 | 18.5 | 16.5 |
≥42 | 1.8 | 1.9 | 1.4 | 1.8 | 1.6 | 2.3 | 2.3 | 2.2 | 1.4 | 2.5 | 1.8 | 0.8 |
Birth weight, % | ||||||||||||
< 2,3rd percentile | 1.7 | 1.4 | 1.4 | 1.5 | 1.8 | 1.6 | 1.7 | 1.8 | 1.9 | 2.0 | 2.0 | 2.1 |
<10th percentile | 8.0 | 6.8 | 7.3 | 7.4 | 9.5 | 7.8 | 7.9 | 8.4 | 8.9 | 8.8 | 9.3 | 9.7 |
>90th percentile | 11.3 | 12.9 | 11.9 | 11.0 | 9.8 | 11.2 | 10.6 | 10.3 | 9.7 | 10.0 | 9.0 | 9.0 |
> 97,7th percentile | 3.0 | 3.5 | 3.4 | 2.9 | 2.4 | 3.0 | 2.7 | 2.7 | 2.5 | 2.4 | 2.3 | 2.4 |
Results on the national level
Regional variations
Nulliparous women, total and by care setting at the onset of labour (abbreviated as ‘midwife’ or ‘obstetrician’) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total | GR | FR | DR | OV | FL | GD | UT | NH | ZH | ZL | NB | LB | |
Total n | |||||||||||||
All women
| 276,701 | 8901 | 9564 | 6785 | 18,051 | 7233 | 30,961 | 23,662 | 49,582 | 63,785 | 4853 | 38,544 | 14,780 |
Midwife
| 153,091 | 4827 | 5701 | 3550 | 10,292 | 3979 | 18,559 | 14,293 | 29,280 | 32,817 | 2695 | 20,2019 | 6879 |
Obstetrician
| 121,612 | 4045 | 3831 | 3217 | 7648 | 3230 | 12,247 | 9266 | 19,663 | 30,283 | 2140 | 18,198 | 7844 |
Induction of labour, % | |||||||||||||
All women
| 21.2 | 24.8 | 20.7 | 26.2 | 23.3 | 20.8 | 18.6 | 18.0 | 19.1 | 23.0 | 22.4 | 21.4 | 24.4 |
Obstetrician
| 48.2 | 54.6 | 52.2 | 55.1 | 54.3 | 46.9 | 47.0 | 46.1 | 47.6 | 48.0 | 51.2 | 45.5 | 46.3 |
Augmentation after spontaneous onset of labour, % | |||||||||||||
All women
| 42.9 | 40.7 | 38.0 | 41.5 | 36.2 | 48.4 | 44.3 | 45.9 | 43.7 | 42.1 | 33.5 | 45.6 | 42.2 |
Midwife
| 39.1 | 37.9 | 34.8 | 37.5 | 32.7 | 43.3 | 41.2 | 43.4 | 40.3 | 37.1 | 29.5 | 41.8 | 37.6 |
Obstetrician
| 54.5 | 49.9 | 51.5 | 53.9 | 48.9 | 62.6 | 55.1 | 54.7 | 55.6 | 54.9 | 47.1 | 56.0 | 52.0 |
Intrapartum oxytocin use, % | |||||||||||||
All women
| 62.2 | 62.4 | 61.7 | 63.3 | 59.0 | 66.5 | 64.3 | 65.6 | 63.4 | 62.4 | 55.1 | 59.9 | 58.0 |
Obstetrician
| 61.6 | 64.6 | 64.4 | 67.5 | 60.9 | 69.5 | 63.2 | 63.7 | 62.1 | 60.9 | 56.5 | 58.7 | 58.4 |
Epidural, % | |||||||||||||
All women without prelabour CS
| 27.4 | 25.4 | 20.1 | 12.3 | 27.7 | 13.7 | 27.6 | 31.0 | 22.3 | 27.3 | 19.1 | 37.5 | 36.4 |
Midwife
| 19.8 | 19.5 | 14.2 | 7.9 | 19.8 | 8.7 | 20.9 | 24.4 | 16.0 | 17.9 | 13.0 | 28.8 | 26.2 |
Obstetrician without prelabour CS
| 38.1 | 33.1 | 30.0 | 17.7 | 39.3 | 20.1 | 38.7 | 42.4 | 32.6 | 38.5 | 27.7 | 48.4 | 46.3 |
Other pharmacological pain relief, % | |||||||||||||
All women without prelabour CS
| 21.6 | 20.1 | 20.6 | 38.2 | 16.2 | 43.0 | 17.6 | 14.8 | 24.6 | 22.3 | 25.6 | 17.2 | 27.9 |
Midwife
| 17.7 | 14.7 | 16.5 | 30.0 | 13.0 | 35.4 | 14.8 | 13.1 | 21.2 | 17.6 | 19.0 | 14.8 | 20.9 |
Obstetrician without prelabour CS
| 27.1 | 27.1 | 27.6 | 48.0 | 20.8 | 53.1 | 22.0 | 17.7 | 29.8 | 28.0 | 34.8 | 20.1 | 34.7 |
Spontaneous vaginal birth, % | |||||||||||||
All women
| 65.2 | 62.4 | 64.0 | 66.0 | 64.1 | 64.6 | 67.4 | 66.8 | 64.6 | 64.1 | 66.2 | 66.2 | 64.9 |
Midwife
| 74.3 | 72.0 | 72.7 | 74.5 | 73.1 | 71.8 | 75.6 | 75.2 | 73.2 | 74.3 | 75.9 | 75.7 | 75.8 |
Obstetrician
| 53.6 | 51.2 | 51.2 | 56.6 | 51.9 | 55.9 | 54.9 | 53.9 | 51.8 | 53.0 | 53.9 | 55.4 | 55.4 |
Instrumental vaginal birth, % | |||||||||||||
All women (without prelabour CS)
| 17.9 | 19.3 | 17.8 | 17.5 | 19.4 | 18.5 | 17.1 | 17.2 | 18.3 | 19.1 | 17.0 | 16.2 | 16.6 |
Midwife
| 17.0 | 18.5 | 17.1 | 17.7 | 18.3 | 18.5 | 16.4 | 16.3 | 17.5 | 17.3 | 15.6 | 15.9 | 15.9 |
Obstetrician (without prelabour CS)
| 19.2 | 20.2 | 18.9 | 17.4 | 21.1 | 18.5 | 18.2 | 18.7 | 19.7 | 21.1 | 18.9 | 16.5 | 17.3 |
Caesarean Section, % | |||||||||||||
All women
| 17.8 | 19.3 | 19.0 | 17.2 | 17.4 | 17.6 | 16.3 | 16.7 | 17.9 | 17.7 | 17.6 | 18.5 | 19.4 |
Prelabour CS, % | |||||||||||||
All women
| 4.5 | 4.6 | 4.7 | 4.1 | 4.4 | 3.6 | 4.1 | 4.2 | 4.3 | 4.4 | 4.6 | 5.2 | 5.8 |
Obstetrician
| 10.2 | 10.0 | 11.5 | 8.6 | 10.2 | 7.9 | 10.2 | 10.6 | 10.7 | 9.2 | 10.4 | 11.1 | 10.8 |
Intrapartum CS, % | |||||||||||||
All women (without prelabour CS)
| 13.9 | 15.4 | 15.1 | 13.7 | 13.6 | 14.6 | 12.7 | 13.1 | 14.2 | 13.9 | 13.7 | 14.0 | 14.4 |
Midwife
| 8.6 | 9.6 | 10.2 | 7.7 | 8.5 | 9.7 | 7.9 | 8.5 | 9.3 | 8.4 | 8.5 | 8.3 | 8.2 |
Obstetrician (without prelabour CS)
| 21.2 | 23.0 | 23.3 | 20.9 | 21.2 | 21.0 | 20.7 | 21.1 | 22.3 | 20.5 | 21.0 | 21.2 | 20.6 |
Involvement paediatrician < 24 h, % | |||||||||||||
All women
| 50.4 | 59.6 | 49.9 | 51.1 | 47.7 | 48.3 | 55.9 | 60.0 | 36.9 | 50.8 | 46.9 | 53.0 | 60.3 |
Midwife
| 38.1 | 45.6 | 37.9 | 37.2 | 34.8 | 38.1 | 43.4 | 49.0 | 26.9 | 36.5 | 32.5 | 42.5 | 47.0 |
Obstetrician
| 65.8 | 76.3 | 67.6 | 66.5 | 64.8 | 60.8 | 74.7 | 76.9 | 51.6 | 66.4 | 65.6 | 64.5 | 71.9 |
Multiparous women, total and by care setting at the onset of labour (abbreviated as ‘midwife’ or ‘obstetrician’)
| |||||||||||||
Total | GR | FR | DR | OV | FL | GD | UT | NH | ZH | ZL | NB | LB | |
Total n | |||||||||||||
All women
| 338,029 | 10,540 | 13,004 | 9090 | 24,818 | 10,228 | 40,325 | 29,231 | 56,366 | 75,788 | 6474 | 45,643 | 16,522 |
Midwife
| 174,918 | 5186 | 7200 | 4334 | 13,630 | 4963 | 22,842 | 16,308 | 30,470 | 37,206 | 3373 | 21,821 | 7585 |
Obstetrician
| 161,286 | 5331 | 5765 | 4735 | 11,070 | 5246 | 17,324 | 12,812 | 25,414 | 37,940 | 3082 | 23,705 | 8862 |
Induction of labour, % | |||||||||||||
All women
| 19.7 | 23.8 | 19.0 | 25.4 | 20.2 | 22.2 | 17.7 | 16.6 | 18.0 | 21.1 | 20.6 | 20.1 | 21.2 |
Obstetrician
| 41.1 | 47.0 | 43.0 | 48.8 | 44.8 | 43.3 | 41.1 | 37.6 | 39.4 | 41.7 | 43.3 | 38.8 | 39.7 |
Augmentation after spontaneous onset of labour, % | |||||||||||||
All women
| 17.3 | 14.5 | 14.8 | 18.0 | 14.0 | 22.6 | 17.2 | 16.1 | 17.9 | 18.4 | 12.4 | 18.8 | 16.6 |
Midwife
| 11.2 | 8.8 | 9.5 | 12.0 | 8.6 | 14.2 | 11.3 | 11.5 | 12.1 | 11.6 | 7.1 | 11.7 | 10.1 |
Obstetrician
| 33.2 | 29.3 | 32.5 | 33.2 | 30.9 | 41.3 | 34.3 | 29.4 | 34.6 | 33.9 | 27.2 | 33.8 | 30.2 |
Intrapartum oxytocin use, % | |||||||||||||
All women
| 44.7 | 47.0 | 47.6 | 51.7 | 44.5 | 51.7 | 46.3 | 43.4 | 45.4 | 45.6 | 41.4 | 40.1 | 39.7 |
Obstetrician
| 45.8 | 50.3 | 50.0 | 54.2 | 46.6 | 54.3 | 47.8 | 43.9 | 45.8 | 45.9 | 42.9 | 41.0 | 41.5 |
Epidural, % | |||||||||||||
All women without prelabour CS
| 9.6 | 8.9 | 7.0 | 4.6 | 8.4 | 4.9 | 9.3 | 10.4 | 8.0 | 9.7 | 7.6 | 13.8 | 13.8 |
Midwife
| 3.0 | 2.7 | 2.0 | 0.8 | 2.2 | 1.6 | 3.0 | 4.2 | 2.6 | 2.6 | 2.3 | 4.8 | 4.3 |
Obstetrician without prelabour CS
| 18.1 | 16.0 | 14.5 | 8.6 | 17.5 | 8.6 | 18.7 | 19.9 | 15.8 | 18.1 | 14.7 | 23.8 | 23.6 |
Other pharmacological pain relief, % | |||||||||||||
All women without prelabour CS
| 14.5 | 12.4 | 14.3 | 22.9 | 11.7 | 26.8 | 11.2 | 9.8 | 14.5 | 15.1 | 14.4 | 15.0 | 19.9 |
Midwife
| 6.6 | 5.0 | 5.6 | 9.5 | 5.2 | 12.6 | 5.3 | 5.1 | 7.2 | 6.5 | 4.7 | 7.9 | 8.4 |
Obstetrician without prelabour CS
| 24.6 | 20.8 | 27.3 | 37.3 | 21.3 | 42.5 | 20.0 | 17.0 | 25.0 | 25.1 | 26.8 | 23.0 | 31.7 |
Spontaneous vaginal birth, % | |||||||||||||
All women
| 83.7 | 82.9 | 82.5 | 83.8 | 83.6 | 84.9 | 86.1 | 84.2 | 82.8 | 83.4 | 83.9 | 83.6 | 81.7 |
Midwife
| 96.9 | 96.6 | 96.2 | 97.3 | 96.6 | 96.9 | 97.2 | 97.1 | 96.8 | 96.8 | 97.1 | 96.9 | 97.1 |
Obstetrician
| 69.3 | 69.7 | 65.2 | 71.5 | 67.5 | 73.6 | 71.5 | 67.9 | 66.0 | 70.1 | 69.4 | 71.1 | 68.6 |
Instrumental vaginal birth, % | |||||||||||||
All women (without prelabour CS)
| 3.5 | 3.7 | 4.1 | 3.5 | 4.2 | 3.1 | 3.3 | 3.1 | 3.1 | 3.8 | 3.7 | 3.1 | 3.5 |
Midwife
| 1.8 | 1.7 | 2.1 | 1.7 | 2.2 | 1.6 | 1.6 | 1.7 | 1.6 | 1.9 | 1.8 | 1.7 | 1.7 |
Obstetrician (without prelabour CS)
| 5.7 | 6.0 | 7.0 | 5.5 | 7.2 | 4.8 | 5.9 | 5.3 | 5.4 | 6.0 | 6.1 | 4.6 | 5.4 |
Caesarean Section, % | |||||||||||||
All women
| 13.2 | 13.7 | 13.8 | 13.0 | 12.6 | 12.2 | 10.8 | 12.9 | 14.3 | 13.2 | 12.7 | 13.6 | 15.2 |
Prelabour CS, % | |||||||||||||
All women
| 7.8 | 7.9 | 7.8 | 7.7 | 7.7 | 7.2 | 5.8 | 8.0 | 8.5 | 7.9 | 7.7 | 8.2 | 9.8 |
Obstetrician
| 16.4 | 15.6 | 17.6 | 14.7 | 17.1 | 14.0 | 13.4 | 18.2 | 18.8 | 15.6 | 16.3 | 15.9 | 18.0 |
Intrapartum CS, % | |||||||||||||
All women (without prelabour CS)
| 5.8 | 6.2 | 6.4 | 5.7 | 5.3 | 5.4 | 5.3 | 5.4 | 6.3 | 5.8 | 5.4 | 5.9 | 6.0 |
Midwife
| 1.3 | 1.7 | 1.6 | 1.0 | 1.2 | 1.5 | 1.2 | 1.2 | 1.5 | 1.4 | 1.1 | 1.4 | 1.1 |
Obstetrician (without prelabour CS)
| 11.6 | 11.4 | 13.8 | 10.7 | 11.4 | 9.6 | 11.5 | 11.8 | 13.4 | 11.0 | 11.2 | 10.9 | 11.0 |
Involvement paediatrician < 24 h, % | |||||||||||||
All women
| 35.6 | 41.1 | 34.5 | 36.3 | 33.9 | 34.0 | 37.8 | 41.9 | 25.6 | 37.0 | 36.0 | 37.0 | 42.7 |
Midwife | 14.6 | 16.6 | 14.2 | 13.7 | 13.1 | 14.8 | 16.4 | 19.6 | 9.2 | 14.4 | 11.7 | 16.8 | 19.2 |
Obstetrician | 58.2 | 65.0 | 59.9 | 57.0 | 59.3 | 52.0 | 66.1 | 70.2 | 45.2 | 59.1 | 62.7 | 55.5 | 62.7 |
Neonatal and maternal outcomes
Total | GR | FR | DR | OV | FL | GD | UT | NH | ZH | ZL | NB | LB | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
614,661 | 19,441 | 22,568 | 15,875 | 42,860 | 17,461 | 71,284 | 52,886 | 105,944 | 139,567 | 11,327 | 84,147 | 31,301 | |
Antepartum and intrapartum stillbirth, n (%) | 717 (0.12) | 23 (0.12) | 32 2(0.14) | 17 (0.11) | 42 (0.10) | 27 (0.15) | 97 (0.14) | 62 (0.12) | 126 (0.12) | 159 (0.11) | 11 (0.10) | 88 (0.10) | 33 (0.11) |
Crude OR [99% CI] | 1.02 [0.61–1.69] | 1.22 [0.79–1.88] | 0.92 [0.51–1.65] | 0.84 [0.57–1.24] | 1.33 [0.83–2.13] | 1.17 [0.89–1.53] | 1.01 [0.73–1.39] | 1.02 [0.80–1.31] | 0.98 [0.78–1.23] | 0.83 [0.41–1.71] | 0.90 [0.68–1.19] | 0.90 [0.59–1.39] | |
aORa [99% CI] | 1.04 [0.62–1.73] | 1.26 [0.81–1.97] | 0.93 [0.51–1.71] | 0.90 [0.61–1.33] | 1.41 [0.86–2.32] | 1.13 [0.85–1.50] | 1.07 [0.76–1.50] | 0.97 [0.74–1.27] | 0.97 [0.75–1.25] | 0.75 [0.35–1.61] | 0.85 [0.63–1.14] | 0.89 [0.58–1.37] | |
Neonatal mortality up to 7 days, n (%) | 471 (0.08) | 14 (0.07) | 13 (0.06) | 12 (0.08) | 29 (0.07) | 14 (0.08) | 72 (0.10) | 42 (0.08) | 85 (0.08) | 98 (0.07) | 12 (0.11) | 52 (0.06) | 28 (0.09) |
Crude OR [99% CI] | 0.93 [0.49–1.78] | 0.75 [0.38–1.46] | 0.98 [0.49–1.97] | 0.88 [0.55–1.39] | 1.04 [0.54–1.99] | 1.31 [0.95–1.80] | 1.03 [0.69–1.53] | 1.04 [0.77–1.40] | 0.91 [0.68–1.21] | 1.37 [0.68–2.76] | 0.80 [0.56–1.15] | 1.16 [0.72–1.86] | |
aORa [99% CI] | 0.93 [0.48–1.79] | 0.76 [0.39–1.51] | 1.06 [0.52–2.14] | 0.83 [0.51–1.36] | 1.04 [0.52–2.11] | 1.34 [0.97–1.86] | 1.02 [0.67–1.57] | 1.01 [0.73–1.40] | 0.92 [0.67–1.27] | 1.38 [0.68–2.79] | 0.80 [0.56–1.16] | 1.08 [0.67–1.76] | |
Apgar score below 7 at 5 minutesb, n (%) | 6410 (1.00) | 291 (1.5) | 280 (1.2) | 132 (0.8) | 354 (0.8) | 163 (0.9) | 715 (1.0) | 460 (0.9) | 1136 (1.1) | 1735 (1.2) | 83 (0.7) | 777 (0.9) | 284 (0.9) |
Crude OR [99% CI] | 1.53 [1.32–1.77] | 1.26 [1.09–1.46] | 0.84 [0.68–1.04] | 0.84 [0.73–0.96] | 0.95 [0.78–1.14] | 1.02 [0.92–1.12] | 0.88 [0.78–0.99] | 1.09 [1.00–1.18] | 1.26 [1.17–1.36] | 0.74 [0.57–0.96] | 0.94 [0.85–1.03] | 0.92 [0.79–1.07] | |
aORa [99% CI] | 1.47 [1.26–1.71] | 1.28 [1.10–1.49] | 0.90 [0.73–1.12] | 0.85 [0.74–0.98] | 0.96 [0.78–1.18] | 1.05 [0.95–1.17] | 0.88 [0.78–0.997] | 0.99 [0.90–1.08] | 1.18 [1.09–1.28] | 0.78 [0.60–1.02] | 0.94 [0.85–1.03] | 0.92 [0.79–1.07] | |
3rd and 4th degree perineal tear for vaginal births, % | 14,065 (2.76) | 432 (2.68) | 528 (2.84) | 423 (3.15) | 1061 (2.95) | 369 (2.49) | 1638 (2.68) | 1369 (3.07) | 2741 (3.13) | 2725 (2.38) | 173 (1.83) | 1919 (2.79) | 687 (2.73) |
Crude OR [99% CI] | 0.99 [0.88–1.12] | 1.05 [0.94–1.17] | 1.17 [1.04–1.32] | 1.10 [1.01–1.19] | 0.92 [0.81–1.04] | 0.99 [0.93–1.06] | 1.14 [1.06–1.23] | 1.16 [1.10–1.23] | 0.88 [0.83–0.93] | 0.67 [0.56–0.81] | 1.03 [0.97–1.10] | 1.01 [0.92–1.11] | |
aORa [99% CI] | 1.00 [0.88–1.12] | 1.09 [0.98–1.22] | 1.17 [1.03–1.33] | 1.10 [1.01–1.91] | 0.96 [0.83–1.10] | 0.99 [0.92–1.06] | 1.09 [1.01–1.18] | 1.15 [1.08–1.22] | 0.88 [0.82–0.93] | 0.70 [0.58–0.84] | 1.01 [0.95–1.08] | 1.01 [0.92–1.11] | |
Postpartum haemorrhages ≥1000 ml, % | 35,868 (6.00) | 1088 (5.62) | 1147 (5.17) | 977 (6.19) | 2283 (5.41) | 1041 (5.99) | 4610 (6.53) | 3054 (5.85) | 6155 (6.03) | 7832 (5.79) | 411 (3.72) | 5430 (6.88) | 1840 (5.95) |
Crude OR [99% CI] | 0.99 [0.91–1.06] | 0.90 [0.84–0.97] | 1.09 [1.01–1.18] | 0.95 [0.90–0.998] | 1.05 [0.97–1.14] | 1.16 [1.11–1.20] | 1.03 [0.98–1.08] | 1.06 [1.02–1.10] | 1.02 [0.98–1.05] | 0.64 [0.57–0.72] | 1.22 [1.17–1.27] | 1.05 [0.99–1.11] | |
aORa [99% CI] | 0.99 [0.92–1.07] | 0.92 [0.85–0.99] | 1.11 [1.02–1.21] | 0.94 [0.89–0.995] | 1.09 [0.998–1.18] | 1.14 [1.09–1.19] | 0.98 [0.93–1.03] | 1.04 [0.99–1.08] | 1.02 [0.99–1.06] | 0.66 [0.58–0.74] | 1.20 [1.15–1.25] | 1.04 [0.98–1.10] |