Intentional injury among the indigenous and total populations in British Columbia, Canada: trends over time and ecological analyses of risk

Table 5 Ecologic analysis of risk of hospitalization due to intentional injury among Health Service Delivery Area population groups in British Columbia, 1999-2008^a. Regression^b statistics from models with one independent (X) variable interacting with Indigenous ethnicity

X Variable	min	max	mean^c	SD^c	N	R²	B^d	SE^e	p^f	SRR change per SD^g	L95CL^h	U95CLⁱ
Census Indigenous	14	2026	1355	896	92	0.832	0.002	0.000	0.000	2.022	1.831	2.212
Income Per Capita 1000 Indigenous	0.2	22.0	9.2	6.2	92	0.758	0.313	0.019	0.000	1.942	1.712	2.172
Income Score Indigenous	0.6	80.1	42.5	28.0	92	0.811	0.071	0.004	0.000	1.992	1.791	2.193
High School Indigenous	0.005	0.871	0.405	0.279	92	0.748	7.119	0.435	0.000	1.985	1.744	2.226
University Degree Indigenous	0.000	0.149	0.032	0.032	92	0.458	54.398	6.234	0.000	1.747	1.350	2.145
Population Per Room Indigenous	0.004	0.812	0.398	0.279	92	0.822	7.402	0.363	0.000	2.063	1.862	2.264
Need Major Repairs Indigenous	0.000	0.478	0.158	0.143	92	0.713	15.093	1.008	0.000	2.155	1.869	2.440
Labour Force Indigenous	0.005	0.758	0.451	0.301	92	0.817	6.737	0.336	0.000	2.029	1.827	2.230
Employed Indigenous	0.004	0.714	0.373	0.254	92	0.772	8.021	0.459	0.000	2.039	1.807	2.271
Occupation Risk Indigenous	0.006	1.446	0.770	0.521	92	0.848	3.901	0.174	0.000	2.034	1.854	2.215
Industry Risk Indigenous	0.007	1.258	0.726	0.487	92	0.846	4.149	0.187	0.000	2.020	1.839	2.200
Occupation Risk Employed Indigenous	0.004	0.934	0.426	0.298	92	0.783	6.882	0.382	0.000	2.053	1.827	2.279
Industry Risk Employed Indigenous	0.004	0.826	0.402	0.280	92	0.782	7.314	0.407	0.000	2.049	1.822	2.276
Occupation Risk Labour Force Indigenous	0.004	1.055	0.514	0.353	92	0.828	5.771	0.277	0.000	2.038	1.843	2.232
Industry Risk Labour Force Indigenous	0.004	0.859	0.485	0.331	92	0.827	6.137	0.296	0.000	2.029	1.834	2.223
Urban Indigenous	0.000	1.004	0.253	0.378	92	0.122	3.408	0.963	0.001	1.289	0.565	2.012
Rural Indigenous	0.000	0.447	0.157	0.158	92	0.765	14.012	0.819	0.000	2.209	1.952	2.465

^aThree population groups (total, Indigenous on-reserve and Indigenous off-reserve) divided by 16 HSDAs and 2 time periods (1998–2003 and 2004–2008)
^bThe dependent (Y) variable is SRR of hospitalization due to intentional injury, and regression is weighted by person-years
^cUnweighted mean and standard deviation (SD) of the independent (X) variable
^dB = regression coefficient
^eSE = standard error of the regression coefficient
^fp = probability that B = 0
^gSRR change per SD = BxSD. One SD change in the independent variable is associated with absolute change in the Standardized Relative Risk of injury by this amount
^hLower limit of the 95% confidence interval for the SRR change per SD
ⁱUpper limit of the 95% confidence interval for the SRR change per SD

ISSN: 1475-9276