Table 2.
Linear regression models with mortality rate in 434 Norwegian municipalities as dependent variable and population density and travel time to hospital care in minutes as categorical predictors
| Univariate models | Multiple model 2 | |||||||
|---|---|---|---|---|---|---|---|---|
| Explanatory variable | Estimate (95% CI) | p Value | AIC | Radj2 | Estimate (95% CI) | p Value | AIC | Radj2 |
| Population density* | 3423.7 | 0.207 | 3419.5 | 0.220 | ||||
| Third quartile (central) | 3.65 (1.44 to 5.84) | <0.001 | 3.61 (1.42 to 5.80) | 0.001 | ||||
| Second quartile (rural) | 5.92 (3.69 to 8.14) | <0.001 | 5.64 (3.31 to 7.98) | <0.001 | ||||
| First quartile (most rural) | 12.0 (9.74 to 14.2) | <0.001 | 10.0 (7.33 to 12.7) | <0.001 | ||||
| Travel time† | 3465.2 | 0.127 | ||||||
| [30,60) | 4.1 (1.90 to 6.35) | <0.001 | 0.40 (−1.94 to 2.76) | 0.733 | ||||
| [60,120) | 10.6 (7.49 to 13.8) | <0.001 | 4.64 (1.15 to 8.12) | 0.009 | ||||
| [120,→) | 13.4 (7.16 to 19.6) | <0.001 | 6.97 (0.78 to 13.2) | 0.027 | ||||
Weighted by municipality population.
*Fourth quartile (most urban) as reference category.
†[0, 30) minutes as reference category.
AIC, Akaike's information criterion.