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Comparison of several perioperative observation indexes between the two groups
| Index | Needle free sling group (n = 44) | Middle urethra suspension group (n = 44) | t | P value |
| Total length of stay (d) | 1.93 (0.56) | 2.08 (0.59) | 1.223 | 0.225 |
| Operation time (min) | 10.25 (2.01) | 20.51 (3.95) | 15.356 | 0.001 |
| VAS score at 1 d after operation | 3.48 (1.02) | 5.63 (1.52) | 7.791 | 0.001 |
| Intraoperative blood loss (mL) | 38.14 (5.22) | 53.61 (8.94) | 9.912 | 0.001 |
VAS: Visual analogue scale.
