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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
  1. * Three population groups (total, Aboriginal on-reserve and Aboriginal off-reserve) divided by 16 HSDAs and 2 time periods (1998–2003 and 2004–2008)
  2. The dependent (Y) variable is the standardized relative risk (SRR) of hospitalization due to injury, and regression is weighted by person-years
  3. Unweighted mean and standard deviation (SD) of the independent (X) variable
  4. §B = regression coefficient
  5. SE = standard error of the regression coefficient
  6. \\p = probability that B = 0
  7. ** 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
  8. ††Lower limit of the 95 % confidence interval for the Relative Risk Ratio per SD
  9. ‡‡Upper limit of the 95 % confidence interval for the Relative Risk Ratio per SD