Spontaneous vaginal | Emergency CS | Vacuum extraction | |
---|---|---|---|
N = 1,010,229 | N = 851,347 | N = 75,216 | N = 87,150 |
% | % | % | |
Maternal age (years) | |||
-19 | 1.9 | 1.1 | 1.6 |
20-24 | 13.6 | 10.1 | 13.5 |
25-29 | 31.2 | 28.1 | 32.8 |
30-34 | 34.6 | 36.1 | 34.8 |
35-39 | 15.6 | 19.4 | 14.4 |
>39 | 2.8 | 4.7 | 2.6 |
Missing | 0.3 | 0.4 | 0.3 |
Maternal height (cm) | |||
-155 | 3.6 | 8.1 | 4.7 |
156-160 | 12.8 | 19.4 | 15.2 |
161-165 | 24.7 | 27.1 | 26.1 |
166-170 | 28.5 | 23.9 | 26.9 |
>170 | 24.5 | 15.0 | 20.9 |
Missing | 6.0 | 6.4 | 6.1 |
Maternal BMI | |||
Underweight | 1.5 | 0.9 | 1.6 |
Normal | 36.6 | 30.3 | 38.1 |
Overweight | 14.3 | 17.6 | 14.2 |
Obese | 5.8 | 10.0 | 5.0 |
Missing | 41.8 | 41.2 | 41.1 |
Parity | |||
Multipara | 60.7 | 35.3 | 20.8 |
Primipara | 39.3 | 64.7 | 79.2 |
Indication | |||
Signs of fetal distress | 1.1 | 29.7 | 34.9 |
Prolonged labour | 6.4 | 32.9 | 38.3 |
Both | 0.2 | 8.3 | 10.8 |
None of these | 92.3 | 29.2 | 16.1 |
Gestational week | |||
37-38 | 16.3 | 16.8 | 11.4 |
39-41 | 77.1 | 64.3 | 75.8 |
42-45 | 6.6 | 18.9 | 12.8 |
Infant birthweight (g) | |||
≤3000 | 9.5 | 11.1 | 9.2 |
3001-3500 | 32.9 | 25.5 | 30.9 |
3501-4000 | 37.7 | 33.0 | 37.7 |
4001-4500 | 16.1 | 21.6 | 17.9 |
>4500 gram | 3.6 | 8.6 | 4.1 |
Missing | 0.2 | 0.3 | 0.2 |