Hospital admissions for asthma, diabetes and COPD: is there an association with practice nurse staffing? A cross sectional study using routinely collected data

Table 4 Relationship between practice characteristics and Standardised Admissions Ratio

Standardised Admission Ratio
	Asthma		COPD		Diabetes
Characteristic	β	SE(β)	β	SE(β)	β	SE(β)
Intercept	0.0324	0.0316	-0.0390	0.0279	-0.1188	0.0416
Bias adjustment
Denominator used to estimate register	-0.0004	0.0148	0.0000	0.0079	-0.0027	0.0119
Area
Density (people per hectare 2001)	0.0360^c	0.0062	0.0307^c	0.0050	0.0377^c	0.0079
Patients
% member of racial or ethnic minority	0.0660^c	0.0072	-0.0386^c	0.0063	-0.0011	0.0098
Disease prevalence
Unadjusted prevalence	0.0849^c	0.0054	0.1537^c	0.0040	0.1041^c	0.0070
Practice
List size per FTE GP	-0.0018	0.0048	-0.0064	0.0034	0.0083	0.0053
Single Handed Practice	0.0011	0.0172	0.0106	0.0132	-0.0216	0.0220
Primary Medical Services Contract	0.0036	0.0100	0.0031	0.0076	0.0182	0.0128
Family Practitioners
≥45 Yr of age	0.0005	0.0055	-0.0214^c	0.0042	-0.0052	0.0071
% Female GPs	-0.0015	0.0056	-0.0010	0.0043	-0.0157^a	0.0073
% GPs qualified in UK	-0.0681^c	0.0064	-0.0490^c	0.0049	-0.0369^c	0.0082
Practice Nurse Staffing
List size per FTE practice Nurse(Quintiles)
1st <3038.01	-0.0695^a	0.0294	0.0312	0.0255	0.1376^c	0.0413
2nd 3038.02-3901.48	-0.0744^a	0.0291	0.0272	0.0253	0.1085^b	0.0410
3rd 3901.49-4823.44	-0.0927^b	0.0290	0.0172	0.0253	0.0812^a	0.0409
4th 4823.45-6210.68	-0.0733^a	0.0289	0.0271	0.0252	0.0948^a	0.0409
5th 6210.69+	-0.0690^a	0.0291	0.0458	0.0253	0.0929^a	0.0410
No Practice nurse	0.0000		0.0000		0.0000
χ² 5df	11.41	p = .044	10.01	p = .075	15.65	p < .001
Variance
PCT Level	0.0655	0.0060	0.0516	0.0046	0.0452	0.0046

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