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Patients’ characteristics.
| Median age in years (IQR) | 79.5 (70.9–83.0) |
| Sex (female) | 11/63 (17.5%) |
| Median body mass index (IQR) | 27 (24–31) |
| Genetic anomaly | 1/63 (1.6%) |
| Single kidney | 10/63 (15.9%) |
| ASA score | |
| 1 | 2/63 (3.2%) |
| 2 | 21/63 (33.3%) |
| 3 | 36/63 (57.1%) |
| 4 | 3/63 (4.8%) |
| NA | 2/63 (3.2%) |
