Ecological analyses of the associations between injury risk and socioeconomic status, geography and Aboriginal ethnicity in British Columbia, Canada

George, M. A.; Brussoni, M.; Jin, A.; Lalonde, C. E.; McCormick, R.

doi:10.1186/s40064-016-2262-x

SpringerPlus

Table 2 Ecologic analysis of risk of hospitalization due to injury among Health Service Delivery Area population groups in British Columbia, 1999–2008*

From: Ecological analyses of the associations between injury risk and socioeconomic status, geography and Aboriginal ethnicity in British Columbia, Canada

X variable	Min	Max	Mean^‡	SD^‡	N	R²	B^§	SE^¶	p^\\	SRR change per SD**	L95CL^††	U95CL^‡‡
Regression ^† statistics from models with one independent (X) variable
Census	2001	2006	2003.5	2.5	92	0.000	−0.001	0.016	0.946	−0.003	−0.084	0.079
Income per capital	7.7	36.0	17.1	6.4	92	0.296	−0.050	0.008	0.000	−0.318	−0.420	−0.215
Income score	45.1	96.5	69.5	12.4	92	0.403	−0.039	0.005	0.000	−0.488	−0.613	−0.364
High school	0.315	0.907	0.650	0.132	92	0.345	−2.787	0.405	0.000	−0.369	−0.476	−0.263
University degree	0.000	0.364	0.084	0.076	92	0.400	−2.816	0.363	0.000	−0.213	−0.268	−0.158
Population per room	0.403	0.812	0.549	0.097	92	0.000	0.029	0.792	0.971	0.003	−0.150	0.156
House needs major repairs	0.050	0.478	0.186	0.116	92	0.591	7.215	0.633	0.000	0.838	0.691	0.984
Labour force	0.515	0.771	0.664	0.053	92	0.004	−0.604	1.062	0.571	−0.032	−0.145	0.080
Employed	0.380	0.734	0.572	0.083	92	0.218	−4.226	0.844	0.000	−0.352	−0.491	−0.212
Occupation risk	0.805	1.446	1.111	0.146	92	0.376	1.636	0.222	0.000	0.240	0.175	0.304
Industry risk	0.687	1.258	1.064	0.108	92	0.305	1.977	0.314	0.000	0.214	0.146	0.281
Occupation risk employed	0.350	0.934	0.635	0.126	92	0.130	1.526	0.416	0.000	0.192	0.088	0.295
Industry risk employed	0.299	0.826	0.609	0.113	92	0.049	1.186	0.552	0.034	0.134	0.010	0.257
Occupation risk labour force	0.510	1.055	0.739	0.124	92	0.306	2.064	0.328	0.000	0.255	0.175	0.336
Industry risk labour force	0.448	0.900	0.708	0.102	92	0.220	2.236	0.444	0.000	0.228	0.138	0.318
Urban	0.000	1.000	0.386	0.416	92	0.449	−0.658	0.077	0.000	−0.274	−0.337	−0.210
Rural	0.000	0.446	0.228	0.153	92	0.482	1.889	0.207	0.000	0.289	0.226	0.351
Aboriginal	0.007	1.010	0.676	0.447	92	0.690	1.853	0.131	0.000	0.829	0.712	0.945
North American Indian	0.004	0.992	0.501	0.377	92	0.683	2.336	0.168	0.000	0.881	0.755	1.006

* Three population groups (total, Aboriginal on-reserve and Aboriginal off-reserve) divided by 16 HSDAs and 2 time periods (1998–2003 and 2004–2008)
^†The dependent (Y) variable is the standardized relative risk (SRR) of hospitalization due to injury, and regression is weighted by person-years
^‡Unweighted mean and standard deviation (SD) of the independent (X) variable
^§B = regression coefficient
^¶SE = standard error of the regression coefficient
^\\p = probability that B = 0
** One SD change in the independent variable is associated with this absolute change in the SRR of injury. E.g., one SD change in Income Per Capita ($6400) is associated with reduction in SRR of 0.318
^††Lower limit of the 95 % confidence interval for the Relative Risk Ratio per SD
^‡‡Upper limit of the 95 % confidence interval for the Relative Risk Ratio per SD

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