Table 1.
Descriptive statistical results.
| Variables | Sample size | Minimum | Maximum | Mean | Standard deviation |
|---|---|---|---|---|---|
| Traffic accident casualties (n) | 403 | 495.0 | 89219.00 | 12012.00 | 11793.78 |
| Residents' consumption level (¥) | 403 | 2723.00 | 49617.00 | 11921.96 | 8021.76 |
| Per capita disposable income (¥) | 403 | 3246.64 | 54305.35 | 13698.17 | 8550.01 |
| GDP (billion ¥) | 403 | 220.34 | 80854.91 | 14804.60 | 14168.98 |
| New road mileage (ten thousand km) | 403 | −1.38 | 15.69 | 0.72 | 1.63 |
| Traffic investment (billion ¥) | 403 | 0.57 | 1982.63 | 161.50 | 180.90 |
| Newly increased population (ten thousand) | 403 | −372.00 | 321.20 | 24.26 | 60.13 |
| New vehicle ownership (ten thousand) | 403 | −102.23 | 272.83 | 49.12 | 4.30 |
GDP: gross domestic product.