Table 4.
Correlation between population and size (km2) with each variable
| Pearson's correlation | Spearman's correlation | |||
| Population | Size (km2) | Population | Size (km2) | |
| Population | -0.24 | 0.11 | ||
| Average travel time (min) | -0.61 | 0.47 | -0.50 | 0.54 |
| Pavement ratio (%) | 0.52 | -0.55 | 0.03 | -0.57 |
| Size (km2) | -0.24 | 0.11 | ||
| Kilometres of general road | 0.33 | 0.53 | 0.65 | 0.62 |
| Kilometres of express road | 0.05 | 0.68 | 0.44 | 0.64 |
| Mountain area (km2) | -0.36 | 0.90a | -0.16 | 0.85a |
| Total kilometres of all roads | 0.44 | 0.48 | 0.76 | 0.56 |
| Road area (km2) | 0.56 | 0.43 | 0.81a | 0.49 |
| Kilometres of impassable road | 0.28 | 0.23 | 0.64 | 0.30 |
| Maintenance ratio of general road (%) | 0.19 | -0.15 | 0.01 | -0.18 |
| Number of tertiary care centres | 0.91a | -0.20 | 0.83a | 0.02 |
| Number of fire stations | 0.95a | -0.06 | 0.88a | 0.20 |
| Percentage of emergency team with EMT to all emergency teams (%) | 0.54 | -0.31 | 0.37 | -0.29 |
| Number of ambulances | 0.94a | -0.03 | 0.94a | 0.23 |
| Number of emergency teams | 0.91a | 0.02 | 0.93a | 0.24 |
| Number of emergency teams with EMT | 0.97a | -0.14 | 0.90a | 0.14 |
| Number of EMT | 0.97a | -0.21 | 0.92a | 0.10 |
| Number of emergency crews | 0.76 | 0.15 | 0.89a | 0.24 |
| Number of emergency medical specialists | 0.90a | -0.24 | 0.77 | -0.03 |
| Number of tertiary hospitals | 0.89a | -0.22 | 0.75 | -0.04 |
| Number of secondary hospitals | 0.94a | -0.20 | 0.88a | 0.05 |
| Number of primary hospitals | 0.44 | -0.03 | 0.41 | -0.05 |
aCoefficient correlation of >0.8.