Table 1. Patient Demographics and Baseline Characteristics of Renal Stones.
| Variables | |
|---|---|
| Number of patients | 60 |
| Number of RIRS | 65 |
| Median age, range, y | 49.4 (15–72) |
| Gender | |
| Male | 32 |
| Female | 28 |
| Laterality | |
| Left | 35 |
| Right | 30 |
| Location, No. (%) | |
| Lower pole with or without others | 38 (58.5) |
| Others | 27 (41.5) |
| Cumulative stone burden, No.(%) | |
| Less than 80 mm 2 | 44 (67.7) |
| 80 and above mm 2 | 21 (32.3) |
| Radio-opacity, No. (%) | |
| Yes | 51 (78.5) |
| No | 14 (21.5) |
| Combination with ureteral stone, No. (%) | |
| Yes | 10 (15.4) |
| No | 55 (84.6) |
| Indication, No. (%) | |
| Primary RIRS | 42 (64.6) |
| Secondary RIRS (failed ESWL) | 20 (30.8) |
| Secondary RIRS (failed PCNL) | 3 (4.6) |