Table 2.

 Mean cost (£) per woman according to planned place of birth for women at low risk and without complicating conditions at start of care in labour (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	545 (3.1)	81 (1.8)	420 (3.2)	442 (2.8)	<0.001	−463.2 (−473.6 to −453.8)	−125.2 (−138.8 to −111.5)	−103.2 (−115.7 to −90.2)
Midwifery staffing	452 (2.6)	574 (2.9)	573 (3.9)	603 (3.5)	<0.001	121.9.0 (109.8 to 133.3)	−120.9 (107.7 to 137.6)	151.1 (136.9 to 165.2)
Homebirth resources	0 (0)	112 (0.2)	0 (0)	0 (0)	<0.001	111.7 (111.2 to 112.1)	0.0 (0.0 to 0.0)	0.0 (0.0 to 0.0)
Transfers	0 (0)	32 (0.7)	46 (1.0)	<0.01 (0.0)	<0.001	31.6 (29.1 to 33.8)	46.2 (42.2 to 49.2)	0.0036 (0.0034 to 0.0037)
Procedures after transfer	0 (0)	49 (0.9)	34 (0.7)	40 (0.6)	<0.001	49.4 (47.6 to 51.2)	33.9 (32.5 to 35.4)	40.2 (38.9 to 41.5)
Birth	175 (2.5)	71 (1.5)	89 (2.1)	108 (1.9)	<0.001	−104.4 (−113.3 to −95.8)	−86.2 (−95.9 to −76.2)	−67.4 (−76.1 to −56.1)
Procedures during labour care	152 (2.0)	46 (1.2)	62 (1.7)	80 (1.5)	<0.001	−105.3 (−112.7 to −96.1)	−90.1 (−98.2 to −82.4)	−71.8 (−78.9 to −63.3)
Postnatal care	114 (0.7)	16 (0.4)	126 (0.9)	100 (0.6)	<0.001	−98.8 (−101.3 to −96.1)	11.5 (7.63 to 14.9)	−14.23 (−17.7 to −11.7)
Admission to higher care-mother	19 (0.9)	7 (0.8)	9 (0.9)	11 (0.6)	<0.001	−11.3 (−15.3 to −7.6)	−9.6 (−15.4 to −5.1)	−7.6 (−10.8 to −4.5)
Admission to higher care-baby	54 (5.8)	38 (4.3)	47 (7.8)	43 (6.4)	0.037	−16.9 (−39.5 to 5.5)	−7.02 (−38.9 to −35.1)	−11.7 (−27.1 to 20.3)
Total cost	152 (10.1)	1027 (8.8)	1405 (13.7)	1426 (11.3)	<0.001	−483.8 (−537.5 to −435.6)	−105.1 (−165.4 to −45.6)	−84.0 (−114.4 to −55.2)

*Estimated though analysis of variance.