Table 1.
Demographic data of patients.
| Variable | Group A (RIRS) | Group B (MPCNL) | P value |
|---|---|---|---|
| 28 patients | 56 patients | ||
| Age (year), mean (SD), range | 45.2 (10.4), 21-65 | 49.6 (12.2), 23-72 | 0.296 |
| Gender (males/females) | 16/12 | 26/30 | 0.355 |
| BMI (kg/m2), mean (SD), range | 24.98 (3.51), 19-32 | 25.32 (4.12), 20-33 | 0.104 |
| Stone-affected side (left/right) | 13/15 | 30/26 | 0.537 |
| Grade of hydronephrosis (no.) | 0.061 | ||
| None | 16 | 20 | |
| Mild | 12 | 36 | |
| Charlson comorbidity index | 0.864 | ||
| 0 (%) | 13 | 24 | |
| 1 (%) | 10 | 18 | |
| 2 (%) | 3 | 10 | |
| 3 (%) | 2 | 4 | |
| Renal stone location, no. (%) | 0.562 | ||
| Renal pelvic+upper pole | 7 | 17 | |
| Renal pelvic+middle pole | 4 | 12 | |
| Renal pelvic+lower pole | 6 | 11 | |
| Renal pelvic+middle pole+lower pole | 5 | 11 | |
| Renal pelvic+upper pole+middle pole | 6 | 5 | |
| Largest stone size (mm), mean (SD), range | 35.3 (6.3), 25-39 | 38.2 (5.4), 28-40 | 0.074 |
| Renal stone burden (mm2), mean (SD), range | 676.1 (42.2), 391.2-803.4 | 729 (83.7), 412.3-843.2 | 0.089 |
| Stone density (HU), mean (SD), range | 894.3 (232.3), 650-1103 | 845.2 (240.2), 600-1206 | 0.43 |
| Positive urine culture, no. (%) | 8 (28.6%) | 21 (37.5%) | 0.417 |