Table 2. Perioperative outcomes.
| MV-VATS | SV-VATS | P value | ||||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| N1 lymph node dissection | ||||||
| Number | 4.78 | 3.49 | 4.64 | 3.9 | 0.716 | |
| Group number | 1.47 | 0.99 | 1.46 | 1.12 | 0.925 | |
| Positive number | 0.3 | 0.99 | 0.27 | 0.88 | 0.762 | |
| Positive group number | 0.18 | 0.58 | 0.17 | 0.48 | 0.723 | |
| N2 lymph node dissection | ||||||
| Number | 12.04 | 7.83 | 10.91 | 8.35 | 0.162 | |
| Group number | 3.03 | 1.18 | 2.63 | 1.11 | 0.001 | |
| Positive number | 0.52 | 2.10 | 0.47 | 1.74 | 0.815 | |
| Positive group number | 0.27 | 0.76 | 0.23 | 0.63 | 0.544 | |
| Days of chest tube use, day | 4.29 | 3.02 | 4.03 | 2.19 | 0.517 | |
| Operative time, min | 172.06 | 61.75 | 158.56 | 40.09 | 0.200 | |
| Anesthesia time, min | 256.70 | 58.52 | 247.40 | 62.49 | 0.528 | |
| Intraoperative bleeding volume, mL | 109.93 | 180.86 | 78.88 | 80.25 | 0.092 | |
SV-VATS, spontaneous ventilation video-assisted thoracoscopic surgery; MV-VATS, double-lumen intubated mechanical ventilation video-assisted thoracoscopic surgery.