Table 3. Operative features (after matching).
| Variables | VATS (n=43) | RATS (n=43) | P value |
|---|---|---|---|
| Operation time (min, mean ± SD) | 113.14±37.16 | 91.59±21.59 | 0.001 |
| Number of the dissecting lymph nodes in N1 (mean ± SD) | 2.47±1.94 | 2.02±1.60 | 0.25 |
| Number of the dissecting lymph nodes in N2 (mean ± SD) | 1.49±0.99 | 1.40±0.93 | 0.65 |
| Intraoperative blood loss (mL, mean ± SD) | 92.49±19.97 | 83.74±39.26 | 0.19 |
| Postoperative hospital stay (days, mean ± SD) | 3.79±1.04 | 3.42±2.26 | 0.33 |
| Thoracic drainage indwelling time (days, mean ± SD) | 2.58±0.88 | 2.14±1.19 | 0.05 |
| Drainage volume on the first day postoperatively (mL, mean ± SD) | 162.02±63.44 | 186.63±176.11 | 0.39 |
| Total postoperative drainage (mL, mean ± SD) | 460.35±150.71 | 362.91±338.96 | 0.09 |
| Early postoperative complications | 0.26 | ||
| Yes | 0 | 5 | |
| No | 43 | 38 | |
| Hospitalization cost (CNY, mean ± SD) | 55634.74±6544.36 | 73380.35±8126.85 | <0.001 |
| Unplanned re-hospitalization | 0.36 | ||
| Yes | 2 | 0 | |
| No | 41 | 43 |
VATS, thoracoscopic assisted surgery group; RATS, robotic assisted surgery group; CNY, China Yuan; SD, standard deviation.