| variable | Score | df | Sig. |
Step 1 | IGFBP2 | 0.942 | 1 | 0.332 |
| AHSG | 0.002 | 1 | 0.968 |
| RBP4 | 2.482 | 1 | 0.115 |
| ALDOB | 1.905 | 1 | 0.167 |
| LDHB | 1.521 | 1 | 0.217 |
| ITIH3 | 6.587 | 1 | 0.01 |
| GPX3 | 7.371 | 1 | 0.007 |
| SPAM1 | 0.04 | 1 | 0.842 |
| PKM2 | 1.65 | 1 | 0.199 |
| Presidential measurement | 21.016 | 9 | 0.013 |
Step 2 | IGFBP2 | 1.903 | 1 | 0.168 |
| AHSG | 3.082 | 1 | 0.079 |
| RBP4 | 6.734 | 1 | 0.009 |
| ALDOB | 1.328 | 1 | 0.249 |
| LDHB | 3.329 | 1 | 0.068 |
| ITIH3 | 6.616 | 1 | 0.01 |
| SPAM1 | 6.705 | 1 | 0.01 |
| PKM2 | 0.03 | 1 | 0.863 |
| Presidential measurement | 18.573 | 8 | 0.017 |
Step 3 | IGFBP2 | 0.849 | 1 | 0.357 |
| AHSG | 1.538 | 1 | 0.215 |
| ALDOB | 0.292 | 1 | 0.589 |
| LDHB | 3.174 | 1 | 0.075 |
| ITIH3 | 4.69 | 1 | 0.03 |
| SPAM1 | 3.759 | 1 | 0.053 |
| PKM2 | 0.002 | 1 | 0.967 |
| Presidential measurement | 13.049 | 7 | 0.071 |
Step 4 | IGFBP2 | 1.187 | 1 | 0.276 |
| AHSG | 1.674 | 1 | 0.196 |
| ALDOB | 0.065 | 1 | 0.798 |
| LDHB | 3.784 | 1 | 0.052 |
| SPAM1 | 4.068 | 1 | 0.044 |
| PKM2 | 0.305 | 1 | 0.581 |
| Presidential measurement | 8.678 | 6 | 0.193 |
Step 5 | IGFBP2 | 0.885 | 1 | 0.347 |
| AHSG | 0.785 | 1 | 0.376 |
| ALDOB | 0.092 | 1 | 0.761 |
| LDHB | 2.862 | 1 | 0.091 |
| PKM2 | 0.684 | 1 | 0.408 |
| Presidential measurement | 5.457 | 5 | 0.363 |