Table 2.
Multivariable spatial analysis of demographic predictors and ESBL-Ec incidence in 2016, with comparison of results across 3 different models
| Year 2016 | Spatially unstructured random effects model (s + μ) | Spatially structured model (s) | Unstructured random effects model (μ) |
|---|---|---|---|
| Demographic variable | Relative risk (95% CI) | ||
| Number of people per km squared (per 1000 people increase) | 0.93 (0.80–1.08) | 0.94 (0.81–1.09) | 0.96 (0.84–1.09) |
| Median age (per 1 year increase) | 0.98 (0.95–1.00) | 0.98 (0.95–1.00) | 0.97 (0.94–0.99) |
| Proportion of male (per 10% increase) | 0.95 (0.56–1.60) | 0.95 (0.56–1.59) | 1.19 (0.70–1.97) |
| Proportion of Aboriginal and Torres Strait Islander (per 10% increase) | 1.12 (0.95–1.33) | 1.13 (0.96–1.33) | 1.20 (1.01–1.43) |
| Proportion of residents born in Australia (per 10% increase) | 1.00 (0.86–1.17) | 1.00 (0.86–1.16) | 0.96 (0.84–1.10) |
| Average number of children per family (per 0.1 unit increase) | 0.95 (0.83–1.08) | 0.95 (0.83–1.08) | 0.95 (0.82–1.08) |
| Average number of residents per house (per 0.1 increase) | 0.94 (0.88–1.01) | 0.94 (0.88–1.00) | 0.95 (0.89–1.02) |
| Proportion of rented households (per 10% increase) | 0.95 (0.82–1.09) | 0.94 (0.81–1.08) | 0.90 (0.78–1.05) |
| Proportion of residents employed in health care services (per 10% increase) | 1.01 (0.68–1.51) | 1.00 (0.69–1.49) | 1.01 (0.69–1.50) |
| Proportion of residents employed in agricultural industry (per 10% increase) | 0.80 (0.67–0.95) | 0.79 (0.67–0.95) | 0.77 (0.65–0.91) |
| Average number of people per bedroom (per 0.1 unit increase) | 0.97 (0.83–1.13) | 0.97 (0.83–1.14) | 0.93 (0.79–1.10) |
| IRSD (per 100 units increase) | 0.66 (0.54–0.79) | 0.66 (0.55–0.79) | 0.62 (0.51–0.74) |
| Posterior mean of variance (95% CI) | |||
| Unstructured | 0.00 (0.00–0.04) | – | 0.17 (0.12–0.27) |
| Structured | 0.41 (0.26–0.66) | 0.43 (0.29–0.67) | – |
| Deviance information criterion (DIC) | |||
| 1275.270 | 1275.140 | 1301.080 | |