Table 2 Comparisons of surgical outcomes and postoperative clinical characteristics between two groups
Variables, mean ± SD or n (%) | Position group (n = 220) | Control group (n = 428) | P value |
|---|---|---|---|
Follow-up, month | 3.3 ± 0.4 | 3.6 ± 0.4 | 0.417 |
Surgical outcomes | |||
operative time, hour | 1.7 ± 0.6 | 1.5 ± 0.5 | 0.243 |
HGB decrease (g/L) | 4.9 ± 3.4 | 5.3 ± 3.7 | 0.915 |
Hospital stay, day | 1.8 ± 0.4 | 1.9 ± 0.5 | 0.973 |
Postoperative anal aerofluxus time, day | 1.2 ± 0.3 | 1.1 ± 0.4 | 0.853 |
Stone compositions | |||
Calcium oxalate | 127 (57.7) | 257 (60.0) | – |
Struvite | 51 (23.2) | 84 (19.6) | 0.322 |
Calcium phosphate | 42 (19.1) | 87 (20.4) | 0.914 |
Postoperative renal function | |||
Normal | 209 (95.1) | 410 (95.8) | – |
Abnormal | 11 (4.9) | 18 (4.2) | 0.643 |
Postoperative hydronephrosis | |||
No | 199 (90.5) | 361 (84.3) | – |
Yes | 21 (9.5) | 67 (15.7) | 0.032* |
SFS at the 2nd week end | |||
No | 86 (39.1) | 226 (52.8) | – |
Yes | 134 (60.9) | 202 (47.2) | 0.001** |
SFS at the 4th week end | |||
No | 57 (25.9) | 159 (37.1) | |
Yes | 163 (74.1) | 269 (62.9) | 0.004** |
SFS at the 12th week end | |||
No | 29 (13.1) | 88 (20.6) | |
Yes | 191 (86.9) | 340 (79.4) | 0.021* |