Table 1.
Patients’ and stone characteristics.
| Variable | SmPCNL | TmPCNL | P |
|---|---|---|---|
| Number of patients | 40 | 40 | |
| Mean (SD): | |||
| Age (years) | 46.1 (18.4) | 40.6 (11.9) | 0.12 |
| BMI (kg/m2) | 30.9 (5.3) | 32.5 (7.1) | 0.25 |
| Stone size (cm) | 1.91 (0.37) | 1.82 (0.36) | 0.24 |
| N (%): | |||
| Sex: | 0.93 | ||
| Male | 27 (67.5) | 31 (77.5) | |
| Female | 13 (32.5) | 9 (22.5) | |
| Stone side: | 0.41 | ||
| Right | 19 (47.5) | 22 (55) | |
| Left | 21 (52.2) | 18 (45) | |
| Stone location: | 0.15 | ||
| Renal pelvis | 8 (20) | 9 (22.5) | |
| Lower calyx | 25 (62.5) | 25 (62.5) | |
| Middle calyx | 5 (12.5) | 5 (12.5) | |
| Upper calyx | 2 (5) | 1 (2.5) | |
| Recurrence: | 0.57 | ||
| De novo | 35 (87.5) | 36 (90) | |
| Recurrent | 5 (12.5) | 4 (10) | |