Univariable and multivariable Poisson regression models for out-of-hospital cardiac arrest incidence by LGAs in Victoria 2011–2013
| Univariable | Multivariable | |||||
|---|---|---|---|---|---|---|
| IRR (95% CI) | p Value | Per cent of LGA variance explained | IRR (95% CI) | p Value | Per cent of LGA variance explained | |
| Population aged over 65 | 1.53 (1.42 to 1.66) | <0.001 | 64.5 | 1.63 (1.54 to 1.73) | <0.001 | 93.9 |
| SEIFA* (Z-score) | 0.85 (0.82 to 0.90) | <0.001 | 41.1 | 0.91 (0.86 to 0.95) | <0.001 | |
| Current smokers (per % increase) | 1.86 (1.54 to 2.24) | <0.001 | 39.3 | 2.19 (1.71 to 2.80) | <0.001 | |
| High school completion (per 10% increase) | 0.91 (0.88 to 0.94) | <0.001 | 29.6 | 1.20 (1.15 to 1.24) | <0.001 | |
| Bachelor's degree (per 10% increase) | 0.87 (0.80 to 0.94) | 0.001 | 15.3 | |||
| Born overseas (per 10% increase) | 0.93 (0.89 to 0.97) | 0.001 | 13.1 | |||
| High-risk alcohol consumption (per 1% increase) | 2.57 (1.07 to 3.19) | <0.001 | 54.7 | |||
| Obese (per 5% increase) | 1.27 (1.18 to 1.37) | <0.001 | 36.6 | |||
| Population density (ln(persons/km2)) | 0.96 (0.94 to 0.97) | <0.001 | 25.5 | |||
*Index of Socio-Economic Advantage and Disadvantage.
IRR, incident rate ratio; LGA, local government area.