Table 1. Analysis of baseline data before and after matching.
| Variables | Before matching | After matching | |||||
|---|---|---|---|---|---|---|---|
| VATS (n=43) | RATS n=67) | P value | VATS (n=43) | RATS (n=43) | P value | ||
| Gender | <0.001 | 0.31 | |||||
| Female | 25 | 44 | 25 | 29 | |||
| Male | 18 | 23 | 18 | 14 | |||
| Age (years, mean ± SD) | 58.26±10.28 | 60.61±10.91 | 0.26 | 58.26±10.28 | 57.98±10.70 | 0.90 | |
| BMI (kg/m2) | 23.16±3.91 | 23.35±2.82 | 0.79 | 23.16±3.91 | 22.82±2.76 | 0.64 | |
| Smoking history | 0.89 | 0.29 | |||||
| Yes | 6 | 10 | 6 | 3 | |||
| No | 37 | 57 | 37 | 40 | |||
| Operation method | |||||||
| Lobectomy | 17 | 32 | 17 | 22 | |||
| Segmentectomy | 26 | 35 | 26 | 26 | |||
| Tumor diameter (cm, mean ± SD) | 1.44±1.13 | 1.49±0.73 | 0.79 | 1.44±1.13 | 1.49±0.79 | 0.82 | |
| Tumor site | 0.07 | 0.33 | |||||
| RUL | 8 | 24 | 8 | 14 | |||
| RML | 3 | 8 | 3 | 6 | |||
| RLL | 6 | 14 | 6 | 12 | |||
| LUL | 20 | 13 | 20 | 13 | |||
| LLL | 6 | 8 | 6 | 8 | |||
VATS, thoracoscopic assisted surgery group; RATS, robotic assisted surgery group; BMI, body mass index; RUL, right upper lobe; RML, right middle lobe; RLL, right lower lobe; LUL, left upper lobe; LLL, left lower lobe; SD, standard deviation.