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Demographic and clinical data
| Polyurethane | Silicone | p-value | |
|---|---|---|---|
| Patients, n (%) | 20 (40%) | 30 (60%) | |
| Age (years); median (range) | 50 (19–60) | 48 (24–64) | 0.96 |
| Male, n (%) | 7 (35%) | 18 (60%) | 0.19 |
| Female, n (%) | 13 (65%) | 12 (40%) | |
| BMI (kg/m2) | 26 26 31 | 26 28 30 | 0.71 |
| Stone size (S) (mm) | 9 12 13 | 6 8 10 | 0.001 |
| Stent installation time, min | 6.1 7.8 9.4 | 6.8 7.8 8.9 | 1.00 |
| Duration of stay of the stent, weeks | 3.2 3.5 3.7 | 3.6 3.8 4.0 | 0.015 |
p-values in the last column are for the comparisons between groups
