Table 1. Characteristics of included patients.
| VATS (%) | Open (%) | P | |
|---|---|---|---|
| Numbers | 2,703 | 2,917 | |
| Sex | <0.001 | ||
| Male | 1,742 (64.4) | 2,163 (74.2) | |
| Female | 961 (35.6) | 754 (25.8) | |
| Age (mean ± SD), years | 59.5±10.9 | 58.5±10.4 | 0.002 |
| Histology | <0.001 | ||
| Squamous carcinoma | 675 (25.0) | 1,081 (37.1) | |
| Adenocarcinoma | 1,663 (61.5) | 1,326 (45.5) | |
| Adenosquamous carcinoma | 126 (4.7) | 168 (5.8) | |
| Large cell carcinoma | 62 (2.3) | ||
| BAC | 75 (2.8) | 198 (6.8) | |
| Others | 102 (3.8) | 101 (3.5) | |
| TNM stage | <0.001 | ||
| Stage I | 1,415 (52.3) | 1,246 (42.7) | |
| Stage II | 657 (24.3) | 794 (27.2) | |
| Stage III (A) | 631 (23.3) | 877 (30.1) |
Abbreviations: VATS, video-assisted thoracoscopy surgery; BAC, bronchioloalveolar carcinoma.