| Explanatory variable | regression coefficient | Standard error | Wald | Significance |
| X1 | 0.634 | 0.323 | 3.847 | 0.050 |
| X2 | 0.821 | 0.394 | 4.340 | 0.037* |
| X3 | 1.600 | 0.331 | 23.426 | 0.000* |
| X4 | 0.293 | 0.504 | 0.338 | 0.561 |
| X5 | 0.924 | 0.390 | 5.601 | 0.018* |
| X6 | 2.192 | 0.495 | 19.605 | 0.000* |
| X7 | 1.923 | 0.463 | 17.265 | 0.000* |
| X8 | 1.147 | 0.565 | 4.127 | 0.042* |
| X9 | 2.593 | 3.043 | 19.955 | 0.000* |
| X10 | −0.22 | 0.749 | 0.001 | 0.977 |
| X11 | 5.449 | 1.651 | 10.893 | 0.001* |