Table 3 Frequencies and crude rates of neonatal intracranial haemorrhage (diagnoses P10 and P52) in term singleton infants categorized by mode of delivery
N= 1,010,229 | Traumatic and non-traumatic intracranial haemorrhage of fetus and newborn n = 462 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Vaginal delivery | Emergency cesarean section | Vacuum extraction | |||||||
N =851,347 | N = 75,216 | N = 87,150 | |||||||
N | n | 1/10 000 | N | n | 1/10 000 | N | n | 1/10 000 | |
Total | 851,347 | 241 | 2.8 | 75,216 | 55 | 7.3 | 87,150 | 166 | 19.0 |
Maternal age (years) | |||||||||
-19 | 16,256 | 4 | 2.5 | 859 | 0 | 1,384 | 1 | 7.2 | |
20-34 | 676,207 | 177 | 2.6 | 55,934 | 44 | 7.9 | 70,645 | 137 | 19.4 |
<34 | 156,454 | 59 | 3.8 | 18,151 | 11 | 6.1 | 14,820 | 28 | 18.9 |
Missing | 2,430 | 1 | 4.1 | 272 | 0 | 301 | 0 | ||
Maternal height (cm) | |||||||||
-155 | 30,767 | 14 | 4.6 | 6,116 | 7 | 11.4 | 4,074 | 18 | 44.2 |
156-160 | 108,658 | 28 | 2.6 | 14,622 | 12 | 8.2 | 13,278 | 31 | 23.3 |
161-165 | 210,094 | 68 | 3.2 | 20,403 | 10 | 4.9 | 22,733 | 38 | 16.7 |
166-170 | 242,617 | 67 | 2.8 | 17,965 | 11 | 6.1 | 23,470 | 39 | 16.6 |
>170 | 208,213 | 53 | 2.5 | 11,276 | 8 | 7.1 | 18,240 | 24 | 13.2 |
Missing | 50,998 | 11 | 2.2 | 4,834 | 7 | 14.5 | 5,355 | 16 | 29.9 |
Maternal BMI | |||||||||
Underweight | 12,843 | 4 | 3.1 | 643 | 0 | 1,372 | 1 | 7.3 | |
Normal | 311,523 | 68 | 2.2 | 22,768 | 11 | 4.8 | 33,207 | 62 | 18.7 |
Overweight | 121,733 | 42 | 3.5 | 13,246 | 10 | 7.5 | 12,395 | 24 | 19.4 |
Obese | 49,278 | 22 | 4.5 | 7543 | 9 | 11.9 | 4,369 | 8 | 18.3 |
Missing | 355,970 | 105 | 2.9 | 31,016 | 25 | 8.1 | 35,807 | 71 | 19.8 |
Parity | |||||||||
Multipara | 516,619 | 101 | 2.0 | 26,521 | 16 | 6.0 | 18,091 | 26 | 14.4 |
Primipara | 334,728 | 140 | 4.2 | 48,695 | 39 | 8.0 | 69,059 | 140 | 20.3 |
Indication | |||||||||
Signs of fetal distress | 9,403 | 10 | 10.6 | 22,320 | 38 | 17.0 | 22,320 | 57 | 18.8 |
Prolonged labour | 54,204 | 28 | 5.2 | 24,738 | 8 | 3.2 | 24,738 | 64 | 19.2 |
Both | 1,834 | 2 | 10.9 | 6,225 | 2 | 3.2 | 6,225 | 22 | 23.4 |
None of these | 785,906 | 201 | 2.6 | 21,933 | 7 | 3.2 | 21,933 | 23 | 16.4 |
Gestational week | |||||||||
37-38 | 138,934 | 66 | 4.8 | 12,641 | 14 | 11.1 | 9,949 | 24 | 24.1 |
39-41 | 656,094 | 154 | 2.3 | 48,343 | 32 | 6.6 | 66,020 | 111 | 16.8 |
42-45 | 56,319 | 21 | 3.7 | 14,232 | 9 | 6.3 | 11,181 | 31 | 27.7 |
Infant birthweight (g) | |||||||||
≤3000 | 60,674 | 44 | 5.5 | 8,334 | 14 | 16.8 | 7,985 | 13 | 16.3 |
3001-3500 | 280,255 | 69 | 2.5 | 19,163 | 9 | 4.7 | 26,914 | 38 | 14.1 |
3501-4000 | 320,650 | 69 | 2.2 | 24,807 | 18 | 7.3 | 32,870 | 63 | 19.2 |
4001-4500 | 136,803 | 42 | 3.1 | 16,236 | 7 | 4.3 | 15,596 | 35 | 22.4 |
>4500 | 30,861 | 17 | 5.5 | 6,455 | 2 | 3.1 | 3,571 | 14 | 39.2 |
Missing | 2,104 | 0 | 221 | 5 | 226.2 | 214 | 3 | 140.2 | |
Shoulder dystocia | |||||||||
No | 849,910 | 240 | 2.8 | 75,212 | 55 | 7.3 | 86,310 | 155 | 18.0 |
Yes | 1,437 | 1 | 7.0 | 4 | 0 | 840 | 11 | 131.0 | |