| Antecedent | Effectif n = 8 | |
| Yes | No | |
| Chronic kidney disease | 2 | 6 |
| Neoplasia (prostate) | 1 | 7 |
| Granulomatosis | 0 | 8 |
| Parathyroid pathology | 0 | 8 |
| Heart failure | 1 | 7 |