| Variable | Category | Frequency (%) |
| *Kt/V | ||
| Inadequate | 4 | 3.8 |
| Adequate | 100 | 96.2 |
| Total | 104 | 100 |
| Urea reduction ratio | ||
| Inadequate | 17 | 16.3 |
| Adequate | 87 | 83.7 |
| Total | 104 | 100 |