Table 2.
Clinical characteristics of the patients after propensity score matching.
| Variables | Thoracotomy (#46) | U-VATS (#46) | p-values |
|---|---|---|---|
| Male gender (%) | 30 (65.2%) | 29 (63.0%) | 0.828 |
| Age (years) | 67.96 ± 8.09 | 68.96 ± 8.05 | 0.554 |
| Active smoker (%) | 12 (26.1%) | 12 (26.1%) | 1.000 |
| COPD (%) | 16 (34.8%) | 17 (36.9%) | 0.828 |
| Diabetes (%) | 9 (19.6%) | 9 (19.6%) | 1.000 |
| Cardiovascular disease (%) | 12 (26.1%) | 14 (30.4%) | 0.596 |
| PCO2 | 45.89 ± 56.87 | 38.10 ± 8.98 | 0.372 |
| PO2 | 100.23 ± 112.83 | 82.47 ± 12.57 | 0.302 |
| FEV1% | 88.44 ± 32.69 | 89.28 ± 18.74 | 0.880 |
| FVC% | 98.82 ± 37.88 | 104.07 ± 17.43 | 0.442 |
| Tumor size (cm) | 2.77 ± 1.45 | 2.64 ± 1.44 | 0.661 |
| Central tumor/size > 3 cm | 22 (47.8%) | 16 (34.8%) | 0.172 |
| Histology (adenocarcinoma/squamous cell carcinoma) | 36 (78.3%)/8 (17.4%) | 37 (80.4%)/9 (19.6%) | 0.355 |