Table 2.
Perioperative, postoperative results and operative complications classified according to Clavien-Dindo system
| Variables | UFURS group (n = 12) | PCNL group (n = 12) | Statistics | P |
|---|---|---|---|---|
| Surgery time (min), mean ± SD | 91.8 ± 24.2 | 86.3 ± 18.7 | 0.624* | 0.539 |
| Stone-free rate, n | 9 | 10 | 0.253† | 0.615 |
| Rate of successful lithotripsy, n | 10 | 11 | 0.381† | 1.000 |
| VAS score postoperative day 1 | 2.7 ± 1.2 | 6.2 ± 1.5 | 2.580* | 0.017 |
| Complications, n | 2 | 3 | 0.253† | 0.615 |
| Grade II | 2 | 2 | 0.001† | 1.000 |
| Grade IIIa | 0 | 1 | 1.043† | 1.000 |
| Hospital stay (days) | 3.4 ± 0.8 | 5.4 ± 1.0 | 5.441* | 0.001 |
| Diverticular state after 3 months, n | ||||
| Disappearance | 6 | 10 | 3.000† | 0.193 |
| Decreased in size | 6 | 2 | ||
| Symptom-free rate, n | 10 | 12 | – |
Data are presented as n or mean ± SD. All P values represent comparisons between UFURS group and PCNL group, two-tailed test; *Mann-Whitney U-test; †Chi-square test. UFURS: Ultrasound-guided flexible ureteroscopy; PCNL: Percutaneous nephrolithotomy; VAS: Visual analog scale; SD: Standard deviation; –: No data.