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Table 4 Ecologic analysis of risk of hospitalization due to intentional injury among Health Service Delivery Area population groups in British Columbia, 1999-2008a. Regressionb statistics from models with one independent (X) variable

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

X Variable min max meanc SDc N R2 Bd SEe pf SRR change per SDg L95CLh U95CLi
Census 2001 2006 2003.5 2.5 92 0.000 0.000 0.036 0.999 0.000 −0.181 0.181
Income Per Capita 1000 7.7 36.0 17.1 6.4 92 0.296 −0.111 0.018 0.000 −0.706 −0.934 −0.478
Income Score 45.1 96.5 69.5 12.4 92 0.421 −0.090 0.011 0.000 −1.110 −1.383 −0.837
High School 0.315 0.907 0.650 0.132 92 0.277 −5.558 0.946 0.000 −0.736 −0.985 −0.487
University Degree 0.000 0.364 0.084 0.076 92 0.211 −4.539 0.926 0.000 −0.344 −0.483 −0.204
Population Per Room 0.403 0.812 0.549 0.097 92 0.058 4.035 1.709 0.020 0.392 0.062 0.722
Need Major Repairs 0.050 0.478 0.186 0.116 92 0.616 16.377 1.364 0.000 1.901 1.586 2.216
Labour Force 0.515 0.771 0.664 0.053 92 0.001 −0.841 2.363 0.723 −0.045 −0.295 0.205
Employed 0.380 0.734 0.572 0.083 92 0.209 −9.191 1.888 0.000 −0.765 −1.077 −0.453
Occupation Risk 0.805 1.446 1.111 0.146 92 0.175 2.481 0.568 0.000 0.363 0.198 0.529
Industry Risk 0.687 1.258 1.064 0.108 92 0.134 2.911 0.780 0.000 0.315 0.147 0.482
Occupation Risk Employed 0.350 0.934 0.635 0.126 92 0.029 1.598 0.976 0.105 0.201 −0.043 0.444
Industry Risk Employed 0.299 0.826 0.609 0.113 92 0.003 0.610 1.256 0.628 0.069 −0.212 0.350
Occupation Risk Labour Force 0.510 1.055 0.739 0.124 92 0.144 3.145 0.809 0.000 0.389 0.190 0.588
Industry Risk Labour Force 0.448 0.900 0.708 0.102 92 0.098 3.324 1.062 0.002 0.339 0.124 0.553
Urban 0.000 1.000 0.386 0.416 92 0.189 −0.949 0.207 0.000 −0.394 −0.566 −0.223
Rural 0.000 0.446 0.228 0.153 92 0.191 2.642 0.574 0.000 0.404 0.230 0.578
Indigenous 0.007 1.010 0.676 0.447 92 0.832 4.521 0.214 0.000 2.022 1.832 2.213
North American Indian 0.004 0.992 0.501 0.377 92 0.810 5.655 0.289 0.000 2.132 1.916 2.348
  1. aThree population groups (total, Indigenous on-reserve and Indigenous off-reserve) divided by 16 HSDAs and 2 time periods (1998–2003 and 2004–2008)
  2. bThe dependent (Y) variable is SRR of hospitalization due to intentional injury, and regression is weighted by person-years
  3. cUnweighted mean and standard deviation (SD) of the independent (X) variable
  4. dB = regression coefficient
  5. eSE = standard error of the regression coefficient
  6. fp = probability that B = 0
  7. 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. E.g., one SD change in Income Per Capita ($6400) is associated with change in SRR of −0.706 (decrease of 0.706)
  8. hLower limit of the 95% confidence interval for the SRR change per SD
  9. iUpper limit of the 95% confidence interval for the SRR change per SD