Table 2.
The SWL outcome (case %) in the three groups and comparisons (Chi square p values) among the study groups
| SWL outcome | Case % | p values | |||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | All | A versus B | A versus C | B versus C | A versus B + C | C versus A + B | |
| SF after 1st SWL | 4.5 | 2.9 | 11.9 | 8.0 | 0.819 | 0.300 | 0.243 | 0.503 | 0.110 |
| SF after 2nd SWL | 4.5 | 14.7 | 25.0 | 17.3 | 0.247 | 0.009 | 0.329 | 0.017 | 0.013 |
| SF after 3rd SWL | 13.7 | 23.5 | 15.5 | 16.7 | 0.406 | 0.987 | 0.441 | 0.693 | 0.833 |
| Overall stone free | 22.7 | 41.1 | 52.4 | 42.0 | 0.133 | 0.002 | 0.368 | 0.004 | 0.263 |
| Residual fragments | 36.4 | 32.4 | 27.4 | 30.9 | 0.897 | 0.397 | 0.752 | 0.463 | 0.409 |
| Stone not fragmented | 40.9 | 26.5 | 20.2 | 27.1 | 0.276 | 0.022 | 0.621 | 0.028 | 0.040 |
Values in italics for p < 0.05
Group A stone-inside-loop, Group B loop-crossing-stone, Group C stone-outside-loop, All the whole study group, SF stone-free