The relationship between staff skill mix, costs and outcomes in intermediate care services

Table 2 Regression results

	Change in Barthel score¹ n = 398	Change in EQ5D score² n = 337	Length of care (days) n = 403	Cost (£s) n = 403
Age	0.3085 (0.2272)	0.0336 (0.0366)	-0.0490 (0.0890)	0.1273*** (0.0363)
Age squared	-0.0022 (0.0014)	-0.0002 (0.0002)	-0.0002 (0.0005)	-0.0008*** (0.0002)
Gender	0.2852 (0.2469)	0.0670 (0.0365)	-0.0225 (0.0754)	0.0352 (0.0379)
Baseline Barthel score	-0.2854*** (0.0794)		-0.0136 (0.0111)	0.0039 (0.0083)
Baseline EQ5 D score		-0.4363*** (0.0651)	0.1067 (0.1026)	0.0450 (0.1075)
Admission avoidance	0.5030 (0.3478)	0.0044 (0.0400)	-0.2000** (0.0832)	0.0565 (0.0618)
Residential care	0.6126 (0.6976)	0.0582* (0.0327)	0.0835 (0.2587)	1.5892*** (0.3578)
Length of care	-0.0003 (0.0057)	-0.0003 (0.0005)	-	0.0257*** (0.0030)
Ratio of support to qualified staff	0.2277 (0.4819)	0.0464* (0.0254)	-0.0564 (0.1042)	0.0600 (0.1076)
Number of different staff types	-0.0529 (0.1532)	0.0161 (0.0103)	0.0470 (0.0608)	-0.1827** (0.0715)
Total number of staff	-0.0064 (0.0258)	-0.0005 (0.0011)	0.0010 (0.0104)	0.2026*** (0.0646)
Total number of staff squared				-0.0085*** (0.0022)
Constant	-4.9479 (8.8322)	1.1658 (1.4717)	6.0765 (3.7505)	0.8401 (1.535)
R-squared	0.1932	0.2505	0.0318	0.2730
Block F-test³	<0.0001	<0.0001	-	-
RESET test	0.0002	0.0441	-	-

1 Positive changes reflect gains in a patient's level of independence.
2 Positive changes reflect improvements in a patient's health related quality of life.
3 Tests the hypothesis that all parameters are equal to zero.
* 0.10 > p-value > 0.05
** 0.05 > p-value > 0.01
*** p-value <0.01

ISSN: 1472-6963