Table 1.
Demographic and clinical characteristics of the study population.
| CKD 1 n = 30 |
CKD 2 n = 30 |
CKD 3 n = 31 |
CKD 4 n = 30 |
CKD 5 n = 25 |
|
|---|---|---|---|---|---|
| Demographic characteristics | |||||
| Age (years) | 41.63 ± 14.38∗ | 53.13 ± 17.77∗ | 61.47 ± 11.05 | 63.23 ± 16.38 | 63.96 ± 12.28 |
| Male sex (%) | 13 (43.3) | 17 (56.7) | 14 (45.2) | 18 (60) | 8 (32) |
| Clinical characteristics | |||||
| PRD | 26 | 25 | 15 | 18 | 18 |
| SRD | 4 | 3 | 12 | 10 | 9 |
| TIN | 1 | 1 | 3 | 2 | 3 |
| Others | 0 | 1 | 1 | 0 | 0 |
The data are expressed as the mean ± SD; ∗ P < 0.05. CKD: chronic kidney disease; PRD: primary renal disease; SRD: secondary renal disease; TIN: tubular interstitial nephropathy.