| Explanatory Variable | Coefficient | Standard Error |
| Participation (partially included) | 3.2667 | 0.8889 |
| Participation (included) | 21.5494 | 406.812 |
| PA age | 0.8413 | 0.483 |
| PA area | -0.3644 | 0.4668 |
| Existence of buffer zone | 1.021 | 0.9352 |
| IUCN category | -0.6628 | 1.1888 |
| Country GDP PPP per capita | 0.1778 | 0.5139 |
| Population density in vicinity of PA | -0.1412 | 0.4506 |