Neonatal outcomes of deliveries in occiput posterior position when delayed pushing is practiced: a cohort study

Table 2 Neonatal outcomes in occiput posterior and anterior births and the risk difference between the groups

Outcome	ALL N = 27,648	Occiput posterior N = 1292		Occiput anterior N = 26,356		Risk difference
	n (%)	n (%)	95% CI	n (%)	95% CI	95% CI
Umbilical artery pH
< 7.00	88 (0.4)	5 (0.5)	0.21–1.14	83 (0.4)	0.34–0.53	0.06 (−0.26–0.78)
< 7.05	278 (1.4)	16 (1.6)	0.96–2.53	262 (1.3)	1.19–1.52	0.22 (−0.44–1.25)
< 7.10	789 (3.9)	56 (5.5)	4.24–7.04	733 (3.8)	3.51–4.05	1.71 (0.40–3.35)
Metabolic acidaemia^a	35 (0.2)	2 (0.2)	0.05–0.72	33 (0.2)	0.12–0.24	0.03 (−0.15–0.62)
Apgar < 7 at 5 min	208 (0.8)	20 (1.5)	1.00–2.38	188 (0.7)	0.62–0.83	0.83 (0.25–1.71)
Neonatal care	458 (1.7)	38 (2.9)	2.15–4.01	420 (1.6)	1.45–1.75	1.35 (0.51–2.47)
Composite morbidity^b	567 (2.1)	47 (3.6)	2.75–4.80	520 (2.0)	1.81–2.15	1.66 (0.72–2.89)

Data are presented as n (%) with 95% confidence interval (CI). Calculations were only made on deliveries with complete registration of data
^aMetabolic acidaemia: umbilical artery pH < 7.00 and base deficit ≥ 12 mmol/L
^bComposite morbidity: any of Apgar score < 7 at 5 min; pH < 7.00; metabolic acidaemia or admission to neonatal care

ISSN: 1471-2393