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| SPS | NPS2 | p-value | |
|---|---|---|---|
| Number of stone recovery | 10.2±8.4 | 8.3±6.9 | 0.467 |
| Laser time (s) | 114.6±126.3 | 91.6±130.5 | 0.256 |
| Operating time (min) | 21.7±17.2 | 17.9±18.7 | 0.090 |
| Stone free rate (%) | 82 | 84 | 0.571 |
| Laser efficiency (mm3/operating time [min]) | 22.4±24.2 | 51.7±61.3 | <0.001 |
Values are presented as mean±standard deviation or number only.
SPS, standard pulse shape; NPS2, new pulse shape 2.
