Table 7. Ecologic analysis* of risk of hospitalization due to unintentional transport injury among Health Service Delivery Area Population Groups in British Columbia, 1999–2008†.
| X•Aboriginal interaction term | min | max | mean‡ | SD‡ | N | R2 | B§ | SE¶ | p\\ | RR per SD** | 95% CI for RR per SD | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census•Aboriginal | 14 | 2026 | 1355 | 896 | 91 | 0.259 | 0.001 | <0.001 | <0.001 | 1.679 | 1.396 | 2.019 |
| Income Per Capita• Aboriginal | 0.2 | 22.0 | 9.2 | 6.2 | 91 | 0.321 | 0.094 | 0.014 | <0.001 | 1.787 | 1.496 | 2.134 |
| Income Score• Aboriginal | 0.6 | 80.1 | 42.5 | 28.0 | 91 | 0.289 | 0.020 | 0.003 | <0.001 | 1.726 | 1.442 | 2.068 |
| High School•Aboriginal | 0.005 | 0.871 | 0.405 | 0.279 | 91 | 0.259 | 1.924 | 0.345 | <0.001 | 1.710 | 1.413 | 2.070 |
| University Degree• Aboriginal | 0.000 | 0.149 | 0.032 | 0.032 | 91 | 0.165 | 17.354 | 4.119 | <0.001 | 1.746 | 1.343 | 2.271 |
| Population Per Room• Aboriginal | 0.004 | 0.812 | 0.398 | 0.279 | 91 | 0.221 | 1.764 | 0.351 | <0.001 | 1.635 | 1.346 | 1.985 |
| Need Major Repairs• Aboriginal | 0.000 | 0.478 | 0.158 | 0.143 | 91 | 0.163 | 3.317 | 0.795 | <0.001 | 1.606 | 1.281 | 2.012 |
| Labour Force•Aboriginal | 0.005 | 0.758 | 0.451 | 0.301 | 91 | 0.257 | 1.734 | 0.313 | <0.001 | 1.686 | 1.398 | 2.033 |
| Employed•Aboriginal | 0.004 | 0.714 | 0.373 | 0.254 | 91 | 0.261 | 2.141 | 0.382 | <0.001 | 1.723 | 1.421 | 2.090 |
| Occupation Risk• Aboriginal | 0.006 | 1.446 | 0.770 | 0.521 | 91 | 0.272 | 1.015 | 0.176 | <0.001 | 1.697 | 1.415 | 2.037 |
| Industry Risk•Aboriginal | 0.007 | 1.258 | 0.726 | 0.487 | 91 | 0.272 | 1.081 | 0.187 | <0.001 | 1.692 | 1.412 | 2.028 |
| Occupation Risk• Employed•Aboriginal | 0.004 | 0.934 | 0.426 | 0.298 | 91 | 0.275 | 1.874 | 0.322 | <0.001 | 1.749 | 1.445 | 2.117 |
| Industry Risk• Employed•Aboriginal | 0.004 | 0.826 | 0.402 | 0.280 | 91 | 0.275 | 1.991 | 0.343 | <0.001 | 1.747 | 1.444 | 2.114 |
| Occupation Risk• LabourForce• Aboriginal | 0.004 | 1.055 | 0.514 | 0.353 | 91 | 0.269 | 1.509 | 0.264 | <0.001 | 1.704 | 1.416 | 2.051 |
| Industry Risk• LabourForce•Aboriginal | 0.004 | 0.859 | 0.485 | 0.331 | 91 | 0.269 | 1.606 | 0.281 | <0.001 | 1.701 | 1.414 | 2.045 |
| Urban•Aboriginal | 0.000 | 1.004 | 0.253 | 0.378 | 91 | 0.007 | 0.379 | 0.473 | 0.425 | 1.154 | 0.809 | 1.647 |
| Rural•Aboriginal | 0.000 | 0.447 | 0.157 | 0.158 | 91 | 0.319 | 4.153 | 0.643 | <0.001 | 1.925 | 1.573 | 2.354 |
* The dependent (Y) variable is LnSRR of hospitalization due to unintentional transportation injury, and regression is weighted by person-years.
† Three population groups (total, Aboriginal on-reserve and Aboriginal off-reserve) divided by 16 HSDAs and 2 time periods (1998–2003 and 2004–2008).
‡ 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.
** Relative Risk per SD = Exp(BxSD). One SD change in the independent variable is associated with change in the Standardized Relative Risk of injury by this factor.