Practice characteristics and prescribing of cardiovascular drugs in areas with higher risk of CHD in Scotland: cross-sectional study

Table 1 Population characteristics and the matching equation

Variable	Mean Values		Coefficient	P-value	Mean Value Matched Controls (SA<1%)	Difference Between Cases And Matched Control P value	Mean Value Unmatched Controls (SA<1%)
	All	Cases (SA>5%)
Number of Practices	702	39			140		523
Proportion of South Asian patients	0.01	0.10	-	-	0	<0.001
Carstairs	-0.17	2.3	0.45	<0.001	2.6	0.22	-0.7
Census not good health	98.9	122	0.11	<0.001	134	0.12	91.4
Census limiting long term illness	98.8	107	-0.2	<0.001	121	0.09	95.2
Temporary residents/practice list size	0.03	0.01	-3.23	0.22	0	0.31	0.05
Proportion of list eligible for road mileage payments	0.11	0	-2.88	<0.001	0.01	0.15	0.19

Notes: Analysis weighted by list size. Dependent variable in the matching equation is the log-odds of the population proportion in South Asian ethnic groups. Adjusted R-squared for the model = 0.59* Figures for matched controls obtained by weighted average using kernel matching.

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