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| Variable | LL (n=135 ) | PL (n=115 ) | P |
| Complications | ≥0.05 | ||
| Ureteral perforation, No. (%) | 1 (0.7) | 5 (4.5) | |
| Postoperative fever, No. (%) | 1 (0.7) | 3 (2.6) | |
| Mucosal damage, No. (%) | 4 (2.9) | 6 (5.2) | |
| MOT ± SD, min | 14.4 ± 2.05 | 10.01 ± 6.2 | ≤0.05 |
| MHS ± SD, h | 25.04 ± 2.1 | 26.2 ± 0.8 | ≤0.05 |
| Immediate stone-free status, No. (%) | 126 (93.3) | 75 (65.2) | ≤0.05 |
| Stone migration, No. (%) | 40 (29.6) | 9 (7.8) | ≤0.05 |
Abbreviations: MOT, Mean operation time; MHS, Mean hospital stay
