Table 3.

Normal labour and birth* by planned place of birth and parity

Planned place of birth	No. events—normal labour and birth*	Total number of births	Incidence of events (%)	Unadjusted OR	Adjusted OR†
All women	991 534	1 250 721	79.3
Hospital	919 974	1 171 050	78.6	1	1
Birth centre	63 773	71 487	89.2	2.26 (2.19–2.33)	2.72 (2.63–2.81)
Home	7787	8184	95.1	5.35 (4.69–6.11)	5.91 (5.15–6.78)
Primiparous women‡	322 640	525 205	61.4
Hospital	298 243	494 019	60.4	1	1
Birth centre	22 401	28 891	77.5	2.27 (2.18–2.35)	2.60 (2.50–2.70)
Home	1996	2295	87	4.38 (3.73–5.14)	5.99 (5.09–7.04)
Multiparous women‡	668 894	725 516	92.2
Hospital	621 731	677 031	91.8	1	1
Birth centre	41 372	42 596	97.1	3.01 (2.79–3.24)	3.27 (3.03–3.53)
Home	5791	5889	98.3	5.26 (4.04–6.83)	5.86 (4.50–7.62)

Cases with missing data were not included in rates or regression calculations.

*Normal labour and birth—spontaneous labour, no epidural or spinal, general anaesthesia, forceps, vacuum extraction, episiotomy or caesarean section.

†Logistic regression adjusted for maternal age, country of birth, gestational age and parity at 99% CI.

‡Parity refers to previous pregnancies>20 weeks and is dichotomised.