ES group (n = 39) | OS group (n = 44) | t/χ2 | P | |
---|---|---|---|---|
Intraoperative blood loss (mL) | 3.06 ± 2.41 | 4.00 ± 3.42 | -1.456 | 0.149 |
Total incision length (cm) | 3.59 ± 0.40 | 3.81 ± 0.80 | 0.937 | 0.352 |
Operative time (min) | 45.54 ± 14.68 | 44.14 ± 22.31 | 0.342 | 0.734 |
Surgical cost (thousand RBM) | 5.1 ± 0.6 | 3.5 ± 2.7 | 15.82 | < 0.001 |