| Cognitive test | Homocysteine (b) | p-value |
| MMSE | −0.010 | 0.752 |
| VP1 | −0.010 | 0.384 |
| Learning slope | −0.048 (*) | 0.042 (*) |
| VP2 | −0.021 | 0.273 |
| VP total | −0.124 (*) | 0.032 (*) |
| Recognition | 0.007 | 0.869 |
| Retrieval | 0.032 | 0.373 |
| Retention | 0.528 | 0.415 |
| Digit forward | −0.007 | 0.798 |
| Digit backward | 0.004 | 0.870 |
| Block design | −0.063 | 0.436 |
| Trial Marking Test D-KEFS condition 5 | 0.584 | 0.081 |
| Digit symbol | −0.255 | 0.196 |
| C stimulus | −0.069 | 0.586 |
| C-W stimulus | −0.498 | 0.087 |