Table 2.
The intra- and postoperative clinical outcome.
| Group A | Group B | p -value | |
|---|---|---|---|
| Accuracy of puncture | |||
| Time to successful puncture (min), median (IQR) | 7.7(3–14) | 13.3 (5–28) | 0.02 |
| First-time success rate | 87.5% (63/72) | 47.8% (32/67) | 0.03 |
| Operative outcome | |||
| Operating time (min), median (IQR) | 62 (39–131) | 79 (42–146) | 0.01 |
| Decrease in hemoglobin (g/L), median (IQR) | 12.5 (7–32) | 14.7 (8–34) | 0.09 |
| Initial stone clearance rate | 81.9% (59/72) | 64.2% (43/67) | 0.01 |
| Final stone clearance rate | 90.3% (65/72) | 83.6% (56/67) | 0.02 |
| Length of hospital stays (day), median (IQR) | 6 (3–13) | 7 (3–14) | 0.14 |
| Classification of complications | 0.03 | ||
| Grade 0, n (%) | 55 (76.4%) | 34 (50.7%) | |
| Grade I, n (%) | 11 (15.3%) | 16 (23.9%) | |
| Grade II, n (%) | 4 (5.6%) | 13 (19.4%) | |
| More than grade II, n (%) | 2 (2.7%) | 4 (6.0%) |