Table 1. Patient demographics.
| Variable | VATS group (N=241) | Open group (N=876) | P |
|---|---|---|---|
| Gender | 0.027 | ||
| Male | 108 (44.8%) | 463 (52.9%) | |
| Female | 133 (55.2%) | 413 (47.1%) | |
| Age (y) | 51.79 | 50.62 | 0.201 |
| Myasthenia gravis | 0.000 | ||
| Yes | 82 (34.3%) | 191 (21.9%) | |
| No | 157 (65.7%) | 682 (78.1%) | |
| Clinical stage | 0.008 | ||
| 1 | 183 (75.9%) | 587 (67.0%) | |
| 2 | 58 (24.1%) | 289 (33.0%) | |
| WHO classification | 0.000 | ||
| A + AB | 100 (41.5%) | 282 (32.2%) | |
| B1 + B2 + B3 | 127 (52.7%) | 406 (46.3%) | |
| C | 14 (5.8%) | 188 (21.5%) | |
| Tumor size (cm) | 4.65 | 7.17 | 0.000 |
| Pathological stage | 0.000 | ||
| 1 | 168 (71.5%) | 386 (44.2%) | |
| 2 | 61 (26.0%) | 224 (25.6%) | |
| 3 | 3 (1.3%) | 213 (24.4%) | |
| 4 | 3 (1.3%) | 51 (5.8%) |
VATS, video-assisted thoracoscopic surgery.