Table 2: Association of neighbourhood predisposing, enabling and need factors with the rate of emergency department contact per 100 ambulatory visits
	Univariate linear regression				Multivariate linear regression
Measure	r2	ß	SE*	p value†	r2	ß	SE*	p value
Predisposing factors
% of population female	0.039	0.092	0.044	0.038	--
% of population aged < 15 yr	0.007	0.022	0.025	NS	--
% of population aged > 65 yr	0.008	0.014	0.015	NS	--
% of population with treaty Indian status	0.412	0.258	0.029	< 0.001	0.188	0.171	0.034	< 0.001
Enabling factors
Distance to emergency department, km‡	0.238	0.194	0.033	< 0.001	--
Mean household income ($10 000)	0.363	0.595	0.075	< 0.001	0.112	0.314	0.086	< 0.001
% of emergency department visits made during physician office hours	0.003	0.009	0.016	NS	--
Need factors % of emergency department visits
Urgent or emergent	0.116	0.036	0.009	< 0.001	--
Resulting in hospital admission	0.002	0.009	0.020	NS	--
Associated with injury diagnosis	0.031	0.029	0.015	NS	--
Associated with mental illness diagnosis	0.125	0.174	0.044	< 0.001	0.038	0.080	0.039	0.043
% of ambulatory visits associated with mental illness diagnosis	0.001	0.029	0.084	NS	0.052	0.158	0.065	0.018
Model R2					0.52
*SE = standard error. †NS = not significant. ‡Mean weighted distance to emergency department. See Methods section.

[Return to text]