Table 1. Patient demographics, radiology characteristics and the operation time.
| Variable | Number (%) | Operation time | P-value |
|---|---|---|---|
| N | 71 (100) | 67.5±32.8 | - |
| Age (years) | 53.8± 12.3 | - | |
| Gender - Male - Female |
43 (60.6) 28 (39.4) |
- | |
| The stone burden (mm2 ) - <400 - 400-799 - 800-1599 - >1600 |
21 (29.6) 30 (42.3) 14 (19.7) 6 (8.5) |
50,8±12.6 62.7±25.0 83.3±42.4 112.5±41.4 |
0.003 |
| The degree of hydronephrosis - No/Might - Moderate/Severe |
45 (63.4) 26 (36.6) |
59.6±26.7 81.8±38.4 |
0.006 |
| The number of involved calyces - 1-2 caculi - 3 caculi - Staghorne calculi |
38 (53.5) 10 (14.1) 23 (32.4) |
54.3±16.6 64.5±26.5 90.4±42.7 |
0,003 |
| The renal parenchyma thickness (mm) - <18 - ≥18 |
39 (54.9) 32 (45.1) |
80.0±38.12 57.18±23.7 |
0,005 |
| The track length (mm) - <100 - ≥100 |
62 (87.3) 9 (12.7) |
67.3± 33.5 68.1± 29.4 |
0,950 |
| The stone density (HU) - <950 - ≥950 |
9 (12.7) 62 (87.3) |
58.7±28.1 68.7±32.8 |
0.4 |