Table 3

Association between trust level staffing and standardised mortality: 137 NHS trusts

	Unadjusted				Adjusted
Parameter	Risk ratio	L_{95% CL}	U_{95% CL}	p Value	Risk ratio	L_{95% CL}	U_{95% CL}	p Value
Medical
Non-teaching trust					1.03	0.96	1.09	0.43
Year, 2009/2010					0.99	0.98	1.01	0.26
Beds (thousands)					0.98	0.93	1.03	0.43
Occupied beds per FTE RN	1.22	1.04	1.43	0.016	1.14	0.95	1.38	0.17
Occupied beds per FTE HCSW	0.95	0.91	1.00	0.041	0.93	0.89	0.98	0.003
Occupied beds per FTE Doctor	1.10	1.05	1.15	<0.001	1.08	1.02	1.15	0.016
Surgical
Non-teaching trust					1.01	0.94	1.09	0.71
Year, 2009/2010					0.97	0.95	1.00	0.02
Beds (thousands)					1.05	0.97	1.14	0.25
Occupied bed per FTE RN	1.15	0.98	1.36	0.088	0.94	0.73	1.20	0.59
Occupied beds per FTE HCSW	0.96	0.89	1.02	0.20	0.95	0.88	1.03	0.22
Occupied beds per FTE Doctor	1.08	1.01	1.16	0.020	1.13	1.04	1.22	0.002

HCSW, healthcare support worker; FTE, full-time equivalent; NHS, National Health Service; RN, registered nurse.