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Table 5 Logistic regression (odds ratios: OR, crude and adjusted) for intracranial laceration and haemorrhage due to birth injury (P10), intracranial non-traumatic haemorrhage (P52), neonatal convulsions (P90) or other disturbances of cerebral status of newborn (P91) by mode of delivery

From: Vacuum assisted birth and risk for cerebral complications in term newborn infants: a population-based cohort study

 

P 10 intracranial laceration and haemorrhage due to birth injury

Mode of delivery

N

n

1/10 000

Crude OR 95% CI

Model 1

Model 2

Vaginal

851,347

30

0.4

1.0

1.0

1.0

CS

75,216

6

0.8

2.26 (0.94-5.44)

1.43 (0.58-3.53)

1.27 (0.46-3.50)

VE

87,150

50

5.7

16.29 (10.36-25.62)

12.43 (7.58-20.38)

10.05 (4.67-21.65)

Total

1,013,713

86

0.8

   
 

P 52 intracranial non-traumatic haemorrhage

Vaginal

851,347

214

2.5

1.0

1.0

1.0

CS

75,216

49

6.5

2.59 (1.90-3.54)

1.69 (1.22-2.35)

1.03 (0.70-1.53)

VE

87,150

121

13.9

5.53 (4.42-6.91)

4.18 (3.29-5.30)

2.23 (1.57-3.16)

Total

1,013,713

384

3.8

   
 

P 90 and/or P91 convulsions and/or encephalopathy

Vaginal

851,347

1,113

13.1

1.0

1.0

1.0

CS

75,216

627

83.4

6.42 (5.82-7.08)

5.02 (4.52-5.58)

2.49 (2.17-2.87)

VE

87,150

847

97.2

7.50 (6.85-8.20)

6.55 (5.95-7.21)

2.61 (2.27-3.00)

Total

1,013,713

2,587

25.5

   
  1. Model 1 ORs adjusted for year of birth, maternal age, maternal height and BMI, parity, gestational age and infant birthweight.
  2. Model 2 ORs also adjusted for shoulder dystocia indications of operative delivery (signs of foetal distress, prolonged labor or foetal distress and prolonged labor).