Table 4 Univariate analysis of baseline characteristics, tumor characteristics, and function protection types in each level of renal function
From: Predictors of postoperative renal functional damage after nephron-sparing surgery
| Â | Little damage (n= 36) | Heavy damage (n= 15) | P |
|---|---|---|---|
Baseline characteristics | |||
 Sex (n) |  |  | 0.733* |
  Male | 28 | 11 |  |
  Female | 8 | 4 |  |
 Age (mean ± SD) | 50.4 ± 6.9 | 56.4 ± 8.0 | 0.042 ** |
 Tumor location (n) |  |  | 0.088* |
  Left | 17 | 11 |  |
  Right | 19 | 4 |  |
 Pathology (n) |  |  | 0.860* |
  Malignant | 28 | 12 |  |
  Benign | 8 | 3 |  |
 GFR of tumor-involved kidney (ml/min 1.73 m2) | 48.1 ± 8.8 | 41.5 ± 9.7 | 0.039 ** |
Tumor characteristics | |||
 Maximum diameter (n) |  |  | 0.047* |
  Φ ≤ 1 cm | 7 | 1 |  |
  1 cm < Φ ≤ 4 cm | 22 | 6 |  |
  Φ > 4 cm | 7 | 8 |  |
 Depth (n) |  |  | 0.001* |
  Exophytic | 10 | 2 |  |
  Central | 22 | 4 |  |
  Intraparenchymal | 4 | 9 |  |
Function protection types | |||
 Vessel blockage type (n) |  |  | 0.794* |
  Continuous artery blocking | 23 | 9 |  |
  Continuous artery and vein blocking | 13 | 6 |  |
 Ischemic protection type (n) |  |  | 0.017* |
  Local cooling | 25 | 5 |  |
  Mannitol application | 11 | 10 |  |
 Warm ischemic time |  |  | 0.187* |
  ≤25 minutes | 30 | 10 |  |
  >25 minutes | 6 | 5 |  |