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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.