Table 1.
Clinical data of patients in PCNL and RIRS groups
| PCNL (n = 60) | RIRS (n = 56) | P | |
|---|---|---|---|
| Age, yr | 52.22 ± 10.56 | 48.84 ± 11.27 | 0.098 |
| Gender, n (%) | 0.395 | ||
| Male | 44 (73.3) | 37 (66.1) | |
| Female | 16 (26.7) | 19 (33.9) | |
| Laterality, left, n (%) | 33 (55.0) | 27 (48.2) | 0.465 |
| Stone size, mm(range) | 29.6 ± 5.7 (20–44) | 27.7 ± 4.7(20–39) | 0.052 |
| Site of stone, n (%) | 0.438 | ||
| Pelvis | 10 (16.7) | 17 (30.4) | |
| Lower calyx | 15 (25.0) | 12 (21.4) | |
| Middle calyx | 1 (1.7) | 2 (3.6) | |
| Upper calyx | 1 (1.7) | 1 (1.8) | |
| Multiple | 33 (55.0) | 24 (42.9) | |
| Hydronephrosis, n (%) | 0.054 | ||
| None or mild | 29 (48.3) | 37 (66.1) | |
| Moderate or severe | 31 (51.7) | 19 (33.9) | |
| Preoperative double-J stent, n (%) | 9 (15.0) | 55 (98.2) | <0.001 |
| Preoperative nephrostomy, n (%) | 3 (5.0) | 0 | - |
| Recurrent stone former, n (%) | 26 (43.3) | 30 (53.6) | 0.270 |
| Comorbidities, n(%) | |||
| Diabetes mellitus | 9 (15.0) | 7 (12.5) | 0.696 |
| Hypertension | 13 (21.7) | 9 (16.1) | 0.442 |
| Heart diseases | 4 (6.7) | 2 (3.6) | 0.739 |
| Renal insufficiency | 13 (21.7) | 9 (16.1) | 0.442 |
| Etiology of solitary kidney, n (%) | 0.764 | ||
| Contralateral nephrectomy | 26 (43.3) | 28 (50.0) | |
| Congenital | 1 (1.7) | 1 (1.8) | |
| Functional | 33 (55.0) | 27 (48.2) | |
| Stone composition, n (%) | 0.307 | ||
| Calcium based | 45 (75.0) | 39 (69.6) | |
| Uric acid | 6 (10.0) | 11 (19.6) | |
| Infection | 9 (15.0) | 6 (10.7) |