Blood pressure ≤150/90 mmHg (n = 7452)		Total Cholesterol ≤5mmol/l (n = 7452)
Clinical indicator	β	SE(β)	β	SE(β)
Characteristic
Intercept	86.604	0.474	76.798	0.719
Area
Density (people per hectare 2001)	–0.175	0.104	–0.345a	0.139a
Index of Multiple Deprivation	–0.163	0.087	–0.270	0.138
Patients
≥65 years of age	0.105	0.140	0.397	0.213
% Member of racial or ethnic minority	–0.322b	0.111	0.054	0.719
Disease prevalence
Unadjusted prevalence	–0.480c	0.142	–0.623b	0.192
Practice
Size of practice population	–0.272b	0.086	0.032	0.110
List size per FTE GP	–0.097	0.073	–0.119b	0.039
Single-handed practice	0.239	0.273	–0.522	0.331
Primary medical services contract	–0.122	0.156	0.021	0.218
GPs
≥45 years of age	–0.061	0.082	–0.584c	0.113
% Female GPs	0.139	0.086	0.518c	0.112
% GPs qualified in UK	0.202	0.105	1.444c	0.140
Exception reporting
CHD blood pressure recorded	–0.041	0.105
CHD blood pressure ≤150/90 mmHg	0.717c	0.097
CHD total cholesterol recorded			–0.529c	0.123
CHD total cholesterol ≤ 5mmol/l			4.073c	0.128
Practice nurses
List size per FTE practice nurse (quintiles)
1st ≤3038.01	0.616	0.470	1.697a	0.744
2nd 3038.02–3901.48	0.477	0.486	1.425a	0.711
3rd 3901.49–4823.44	0.636	0.473	1.756a	0.720
4th 4823.45–6210.68	0.627	0.488	1.498a	0.732
5th ≥6210.69	0.475	0.501	1.253	0.718
No practice nurse	0.000		0.000
Global test for effect of nurse staffing –2 log likelihood (IGLS)
Model without practice nurse variable	48060.285		52306.914
Model with practice nurse variable	48057.492		52296.348
Difference in log likelihood (5df)	2.793		10.566
P-value	0.730		0.061
Variance
PCT level	1.481	0.203	7.106	0.824
Practice level	27.432	0.752	47.209	1.459

df = degrees of freedom. CHD = coronary heart disease. FTE = full-time equivalent. SE = standard error.

^aP<0.05;

^bP<0.01;

^cP<0.001.