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Table 2 Effect of anaesthesia type, by caesarean section indication, on relative risk of neonatal outcomes.

From: Regional block versus general anaesthesia for caesarean section and neonatal outcomes: a population-based study

Riskgroup/Indication

Outcome

General anaesthesia events/N(rate %)

Regional block events/N(rate %)

Relative risk if general anaesthesia used (95% confidence interval)

Risk difference* (%) (95% confidence interval)

Low risk:

planned repeat

Resuscitation w/intubation

46/4149

(1.11)

20/23,139

(0.09)

12.8

(7.6, 21.7)

1.0

(0.7, 1.3)

caesarean

     

section

Apgar5 <7

96/4146

(2.32)

40/23,134

(0.17)

13.4

(9.2, 19.4)

2.1

(1.7, 2.6)

Moderate risk:

unplanned

Resuscitation w/intubation

71/2320

(3.06)

68/13,449

(0.51)

6.1

(4.3, 8.5)

2.6

(1.8, 3.3)

caesarean

     

section for failure to progress

Apgar5 <7

95/2319

(4.10)

70/13,446

(0.52)

7.9

(5.8, 10.7)

3.6

(2.8, 4.4)

High risk:

unplanned

Resuscitation w/intubation

139/2058

(6.75)

105/5759

(1.82)

3.7

(2.9, 4.8)

4.9

(3.8, 6.1)

caesarean section for foetal

     

distress during labour

Apgar5 <7

158/2054

(7.69)

95/5757

(1.65)

4.7

(3.6, 6.0)

6.0

(4.8, 7.2)

  1. *Rate in general anaesthesia sub-group minus the rate in the regional block sub-group, representing the excess number of adverse outcomes per 100 deliveries under general anaesthesia.