| Variables | N | Mean | Stand.deviation | ±95% Confid.interval |
| Age (y) | 600 | 61.05 | ±5.8 | 60.5 - 62.4 |
| Females (n.%) | 298 | 49.7% |
|
|
| Males (n.%) | 302 | 50.3% |
|
|
| BW (kg) | 600 | 76.28 | ±11.8 | 75.3 - 77.2 |
| BH (cm) | 600 | 168.88 | ±6.5 | 168.3 - 169.4 |
| BMI (kg/m) | 600 | 27.3 | ±3.9 | 26.9 - 27.6 |
| BP-d (y) | 600 | 6.3 | ±1.7 | 6.2 - 6.5 |
| DM-d (y) | 600 | 5.2 | ±2.0 | 5.0 - 5.3 |
| No- of visits. | 600 | 4.4 | ±0.6 | 4.3 - 4.4 |
| Na+ (mmol/dl) | 600 | 136.2 | ±4.6 | 136.1 - 140.2 |
| K+ (mmol/dl) | 600 | 3.9 | ±0.5 | 3.9 - 4.0 |
| S.Urea (mmol/dl) | 600 | 6.2 | ±2.1 | 6.2 - 7.9 |
| S.Creat. (mmol/dl) | 600 | 80.9 | ±7.5 | 80.4 - 81.6 |