| Equation | Human Development Index |
| Human Development Index (−1) | 0.385*** (2.86) |
| Index of diversification of nontimber forest products | −0.002 (−0.62) |
| Forested area | 9.714*** (3.47) |
| Energy consumption per inhabitant | −0.004 (−0.84) |
| Service sector | 0.0002 (1.28) |
| Constant | 0.005*** (−3.27) |