Table 2.

Multiple linear regression

Block	Predictors*	Unstandardised coefficient	95% CI	Standardised coefficient	p Value
Population, geography, health	EMPLOYMENT	203	179 to 227	0.78	0.001
	URBAN/RURAL			−0.17	0.001
	Major urban	536	138 to 934
	Large urban	437	23 to 850
	Other urban	452	38 to 867
	Significant rural	386	−14 to 787
	Rural 50%	322	−81 to 725
Services	EDDEMAND	0.9	0.4 to 1.3	0.30	0.001
	EDCONVERSION	7.3	5.1 to 9.4	0.46	0.001
	MANAGEMENT/CODING	18.4	10.1 to 26.6	0.29	0.001
	AMBTRANSPORT	−5.6	−10.2 to −0.9	−0.18	0.02
	GPACCESS3	16.6	6.5 to 26.8	0.24	0.001

*See online supplementary table S2 for definition of predictors.