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Univariate analysis for continuous variables predicting failure of in situ ESWL for DUC.
| Variable | Outcome | N | Mean (SD) | P |
|---|---|---|---|---|
| Stone length (mm) | Failure | 16 | 10.69 (2.52) | 0.010 |
| Success | 84 | 9.00 (2.31) | ||
| Stone width (mm) | Failure | 16 | 6.63 (2.09) | 0.008 |
| Success | 84 | 5.30 (1.73) | ||
| Age (years) | Failure | 16 | 38.5 (19.9) | 0.362 |
| Success | 84 | 33.63 (14.14) | ||
| Symptom duration (days) | Failure | 16 | 17.06 (7.47) | 0.580 |
| Success | 84 | 18.64 (10.89) | ||
