| GFR IN ML/MIN/173M2 | |||
| Age | GFR < 60 mL/min/1.73m2 | GFR ≥ 60 mL/min/1.73m2 | Total |
| From 0 to 5 years old | 12 (44.4%) | 15 (55.5%) | 27 |
| From 6 to 10 years old | 0 | 7 (100%) | 7 |
| From 11 to 15 years old | 0 | 7 (100%) | 7 |
| TOTAL | 12 | 29 | 41 |