Table 2.
Comparison of operating time, problems, procedure side and site, modality, and Guy's Stone Score.
| Group A | Group B | Group C | P-value | |
|---|---|---|---|---|
| Operation time (mins) | 66.4 ± 29.3 | 36.3 ± 16.8 | 34.1 ± 19.5 | 0.000 |
| Procedure side (Right/Left) | 31/28 | 31/31 | 24/36 | – |
| Retrograde catheterization(Yes/No/Failed) | 52/1/4 | 54/2/4 | 60/0/0 | – |
| Puncture site(Upper pole/Mid pole/Lower pole) | 9/19/30 | 12/28/22 | 9/28/20 | – |
| Rate of problems during operation (%) | 45.8 | 8.1 | 13.3 | 0.000 |
| Stone fragmentation Modality(Pneumatic/Ultrasonic) | 25/24 | 0/0 | 0/0 | – |
| Guy's Stone Score (1/2/3/4) | 30/17/7/5 | 35/18/5/4 | 32/15/7/6 | – |