Table 3

Results of unpaired t tests and analyses of variance to determine differences in standardised stillbirth rates (SSBR) and standardised neonatal mortality (SNNM), Thames hospitals 1994–1996

Variable	Group	SSBR		SNNM		N
Variable	Group	Mean	p Value	Mean	p Value	N
24 hour epidural service?	Yes	5.81	0.73	3.55	0.09	37
	No	6.07		2.71		3
Dedicated maternity theatre?	Yes	5.81	0.51	3.48	0.88	38
	No	6.41		3.57		2
Does unit have a risk manager?	Yes, specifically for maternity	5.55	0.86	3.64	0.41	20
	Yes, for the whole hospital	5.71		3.32		23
	No	5.79		3.32		8
Grade of risk manager?	Obstetrician	5.68	0.77	3.95	0.13	10
	Midwife manager	5.83		3.39		12
	Clinical midwife	6.16		3.92		4
	Other	5.40		3.18		16
	No risk manager	5.79		3.32		8
Frequency of perinatal meetings?	Once a week	5.51	0.85	2.99	0.61	7
	Once a fortnight	5.6		3.46		1
	Once a month	5.55		3.57		31
	Once every two months	6.22		3.28		4
	Once a quarter	5.84		3.61		6
	When a case happens	6.31		3.05		2