| Cause of nephropathy | Number | Percentage |
| Hypertensive nephropathy | 31 | 41.3% |
| Chronic glomerulonephritis | 18 | 24% |
| Chronic kidney disease of unknown aetiology | 14 | 18.7% |
| Diabetic nephropathy | 7 | 9.3% |
| Autosomal dominant polycystic kidney disease | 3 | 4% |
| Chronic tubulointerstitial nephritis | 1 | 1.3% |
| Cortical necrosis | 1 | 1.3% |