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Demographic data and stone characteristics.
| Variable | Value |
|---|---|
| Patient, n | 52 |
| Age, mean±SD, year | 42.0±16.3 |
| Gender, n | |
| Male | 34 |
| Female | 18 |
| Stone position, n (%) | |
| Upper ureter | 21 (40.4) |
| Middle ureter | 19 (36.5) |
| Lower ureter | 12 (23.1) |
| Stone size, mean±SD, mm | 18.8±3.5 |
| CT value, mean±SD, HU | 835±318 |
| Compact stone, n (%) | 41 (78.8) |
CT, computed tomography; HU, Hounsfield unit; SD, standard deviation.
