Table 2 Comparisons of patients’ demographics and preoperative clinical characteristics between two groups.
Variables, mean ± SD or n (%) | FV-UAS group (n = 75) | MPCNL group (n = 74) | t/χ2 value | P value |
|---|---|---|---|---|
Age, years | 50.1 ± 5.7 | 48.8 ± 6.1 | 1.344 | 0.181 |
BMI, kg/m2 | 25.3 ± 3.9 | 24.9 ± 3.5 | 0.659 | 0.511 |
Gender | 0.164 | 0.685 | ||
Male | 41 (54.7) | 38 (51.4) | – | – |
Female | 34 (45.3) | 36 (48.6) | – | – |
Hypertension history | 32 (42.7) | 34 (45.9) | 0.162 | 0.687 |
Diabetes history | 27 (36.0) | 23 (31.1) | 0.404 | 0.525 |
ASA classification | 1.291 | 0.524 | ||
Ⅰ | 44 (58.7) | 50 (67.6) | – | – |
Ⅱ | 24 (32.0) | 19 (25.7) | – | – |
Ⅲ | 7 (9.3) | 5 (6.7) | – | – |
Laterality | 0.161 | 0.688 | ||
Left | 47 (62.7) | 44 (59.5) | – | – |
Right | 28 (37.3) | 30 (40.5) | – | – |
Stone diameter (cm) | 3.5 ± 0.4 | 3.6 ± 0.6 | − 1.198 | 0.233 |
STONE score | 8.7 ± 0.8 | 8.9 ± 1.1 | − 1.271 | 0.206 |
Stone distribution | 0.251 | 0.882 | ||
Renal calyx stones | 12 (16.0) | 5 (6.8) | – | – |
Renal pelvis stones | 10 (13.3) | 14 (18.9) | – | – |
Multiple stones | 53 (70.7) | 55 (74.3) | – | – |
CT value of stone (HU) | 951.3 ± 117.7 | 978.1 ± 109.5 | − 1.438 | 0.152 |
Grade of hydronephrosis | 0.993 | 0.319 | ||
None or Mild | 59 (78.7) | 53 (71.6) | – | – |
Moderate or Severe | 16 (21.3) | 21 (28.4) | – | – |
Urine culture | 0.404 | 0.525 | ||
Negative | 48 (64.0) | 51 (68.9) | – | – |
Positive | 27 (36.0) | 23 (31.1) | – | – |
Pre-stenting | 29 (38.7) | 21 (28.4) | 1.768 | 0.184 |
Upper urinary stone operation histories a | 19 (25.3) | 22 (29.7) | 0.361 | 0.548 |
