Table A1.
Characteristics of independent variables.
| Variables | Mean | Min | Max | Std. Deviation |
|---|---|---|---|---|
| Average NHI premium per household | 73.7 | 47,1 | 144.2 | 16.0 |
| Primary care physicians per 10,000 population | 3.1 | 0.0 | 12.7 | 1.5 |
| Hospital beds per 1000 population (<300) | 3.5 | 0.0 | 14.4 | 2.5 |
| Hospital beds per 1000 population (>300) | 1.6 | 0.0 | 26.6 | 3.2 |
| Annual average ambient concentration of CO | 0.48 | 0.26 | 0.93 | 0.11 |
| Annual average ambient concentration of SO2 (X100) | 0.44 | 0.15 | 1.04 | 0.16 |
| Annual average ambient concentration of PM10 | 47.8 | 30 | 71 | 6.9 |