| Variables | Coefficients | Std. error | P | Odds ratio | 95% CI | |
| Lower | Upper | |||||
| Period after transplantation (years) | ||||||
| <2** | - | - | - | 1 | ||
| 2 - 5 | 0.886 | 0.609 | 0.146 | 2.425 | 0.739 | 8.005 |
| 5 - 10 | 2.306 | 0.604 | <0.001 | 10.035 | 3.072 | 32.784 |
| >10 | 2.553 | 0.639 | <0.001 | 12.843 | 3.672 | 44.924 |
| Live kidney or cadaveric kidney | ||||||
| Cadaveric kidney | - | - | - | 1 | ||
| Living-donor kidney | 1.125 | 0.482 | 0.020 | 3.082 | 1.128 | 7.579 |
| Constant | -2.353 | 0.645 | 0.580 | 1.356 | ||