Table 1.

 Mean cost (£) per woman according to planned place of birth for all women at low risk of complications (2009-10 prices)

Cost category	Mean (SE) cost (£)				P value*	Bootstrap mean difference (95% CI)
	Obstetric unit (OU)	Home	Free standing midwifery unit (FMU)	Alongside midwifery unit (AMU)
						OU−home	OU−FMU	OU−AMU
Overheads	569 (2.9)	93 (1.9)	426 (3.1)	451 (2.8)	<0.001	−475.6 (−482.0 to −468.8)	−143.3 (−152.2 to −134.9)	−118.7 (−126.9 to −110.6)
Midwifery staffing	472 (2.4)	581 (2.8)	578 (3.8)	611 (3.4)	<0.001	108.1 (100.2 to 116.4)	105.2 (95.9 to 114.4)	138.7 (130.4 to 147.2)
Homebirth resources	0 (0)	112 (0.2)	0	0	<0.001	111.7 (111.2 to 112.1)	0	0
Transfers	0 (0)	34 (0.7)	49 (1.0)	<0.01 (0.0)	<0.001	33.7 (32.4 to 35.1)	49.1 (46.9 to 51.2)	0.0036 (0.0034 to 0.0037)
Procedures after transfer	0 (0)	53 (0.9)	36 (0.7)	43 (0.6)	<0.001	53.0 (51.2 to 54.8)	36.4 (34.9 to 37.8)	42.9 (41.8 to 44.2)
Birth	207 (2.5)	77 (1.5)	94 (2.1)	114 (1.9)	<0.001	−130.1 (−135.8 to −124.7)	−113.4 (−119.9 to −107.2)	−92.9 (−99.2 to −86.6)
Procedures during labour care	174 (1.9)	50 (1.3)	65 (1.7)	84 (1.5)	<0.001	−122.8 (−127.1 to −118.2)	−109.3 (−114.2 to −104.4)	−89.9 (−94.9 to −85.1)
Postnatal care	122 (0.6)	18 (0.4)	127 (0.9)	102 (0.6)	<0.001	104.3(−105.9 to −102.5)	5.1 (2.7 to 7.6)	−20.1 (−22.1 to −18.3)
Higher care-mother	22 (0.9)	8 (0.8)	9 (0.9)	11.8 (0.6)	<0.001	−13.2 (−15.5 to −10.8)	−11.9 (−14.3 to −9.8)	−9.6 (−11.8 to −7.6)
Admission to higher care-baby	64 (5.2)	42 (4.3)	50 (7.5)	45 (6.2)	0.037	−21.9 (−36.6 to −9.4)	−15.0 (−32.8to −3.7)	−19.6 (−35.6 to −1.9)
Total cost	1631 (10.1)	1067 (8.9)	1435 (13.5)	1461 (11.1)	<0.001	−564.6 (−591.7 to −533.9)	−195.4 (129.1 to −157.4)	−169.5 (−199.7 to −137.4)

*Estimated though analysis of variance.