How equitable are GP practice prescribing rates for statins?: an ecological study in four primary care trusts in North West England

Table 2 Multiple regression models

PCT	R²	Needs indicator	Standardised beta coefficient	% variance explained
PCT1 ( n = 50)*	.245	CHD diagnoses rate	.489	15.0
		WTE GPs/1000 patients	-.327	9.5
PCT2 ( n = 24)*	.583	CHD hospital episode statistics rate	.763	58.3
PCT3 ( n = 31)*	.313	CHD procedures rate	.490	20.7
		Low Income Scheme Index	-.327	10.6
PCT4 ( n = 27)*	.505	Single handed	-.340	27.0
		Ethnicity	-.538	12.5
		% patients aged >75	-.373	11.0
Combined ( n = 132)*	.289	CHD hospital episode statistics rate	.350	14.7
		% patients aged >75	-.240	4.2
		Ethnicity	-.233	3.1
		% patients aged 55–74	.199	2.9

* n refers to the number of GP practices in each PCT which were contained in the regression model

ISSN: 1475-9276