| Variable | Parameter | Pr > χ2 | Parameter | Pr > χ2 | Parameter | Pr > χ2 |
| Intercept | 55.926 | 0.002 | 13.082 | 0.084 | 60.851 | 0.001 |
| Eco_stage | −9.322 | 0.004 | −8.783 | 0.007 | ||
| GDP_PPP | 0.000 | 0.173 | 0.000 | 0.204 | ||
| Institutions | −0.603 | <0.0001 | −0.677 | <0.0001 | −0.570 | <0.0001 |
| Press_freedom | −0.174 | 0.001 | −0.208 | <0.0001 | −0.187 | 0.000 |
| ELF | −17.076 | 0.017 | −15.772 | 0.025 | −14.279 | 0.053 |
| HDI | −0.010 | 0.915 | −0.134 | 0.049 | 0.018 | 0.853 |
| R-squared | 0.7221 | 0.7266 | 0.7233 | |||
| N | 132 | 155 | 132 |