Table 1. Summary of baseline patient characteristics, operative data and treatment-related factors of 1,139 patients who underwent video-assisted thoracic surgery for non-small cell lung cancer.
| Characteristic | No. of patients (%) |
|---|---|
| Gender | |
| Male | 791 (69.4) |
| Female | 348 (30.6) |
| Age, years | |
| Median | 60 |
| Range | 21-85 |
| ≤65 | 740 (65.0) |
| > 65 | 399 (35.0) |
| Smoking status | |
| Non-smoker | 284 (24.9) |
| Smoker | 855 (75.1) |
| FEV1.0 (L) | 2.3±0.6a |
| FEV1.0 (% predicted) | 73.5±8.7a |
| TNM stage | |
| I | 463 (40.6) |
| IA | 252 (22.1) |
| IB | 211 (18.5) |
| II | 301 (26.4) |
| IIA | 179 (15.7) |
| IIB | 122 (10.7) |
| III | 348 (30.6) |
| IIIA | 330 (30.0) |
| IIIB | 18 (1.6) |
| IV | 27 (2.4) |
| pT status | |
| ≤2 | 190 (16.7) |
| >2 to ≤3 | 264 (23.2) |
| >3 to ≤5 | 378 (33.2) |
| >5 to ≤7 | 193 (16.9) |
| >7 | 114 (10.0) |
| pN status | |
| N0 | 607 (53.3) |
| N1/N2 | 532 (46.7) |
| Lymphovascular invasion | |
| Lymphovascular invasion | 556 (48.8) |
| Without lymphovascular invasion | 583 (51.2) |
| Type of resection | |
| Right upper lobectomy | 265 (23.3) |
| Right middle lobectomy | 62 (5.4) |
| Right lower lobectomy | 145 (12.7) |
| Right middle and lower bilobectomy | 52 (4.6) |
| Right upper and middle bilobectomy | 22 (1.9) |
| Left upper lobectomy | 201 (17.6) |
| Left lower lobectomy | 143 (12.6) |
| Pneumonectomy | 61 (5.4) |
| Left | 36 (3.2) |
| Right | 25 (2.2) |
| Segmentectomy | 67 (5.9) |
| Sleeve lobectomy | 121 (10.6) |
| Final pathology | |
| Adenocarcinoma | 546 (47.9) |
| Squamous cell | 437 (38.4) |
| Bronchioalveolar carcinoma | 96 (8.4) |
| Adenocarcinoma—squamous cell carcinoma | 39 (3.4) |
| Large cell | 21 (1.8) |
| Type of VATS approach | |
| c-VATS | 663 (58.2) |
| a-VATS | 476 (41.8) |
| Operative time (minutes) | 168.0±35.0a |
| Blood loss (mL) | 165.6±48.4a |
| Chest tube duration (days) | 3.2±1.8a |
| Postoperative hospital stay (days) | 6.5±2.5a |
| Dissected lymph nodes | 16.5±5.5a |
| Dissected nodal stations | 7.5±1.5a |
| Dissected mediastinal node stations | 6.2±1.1a |
| Dissected intrapulmonary node stations | 2.1±0.5a |
| Adjuvant chemotherapy | |
| Vinorelbine + platinum | 352 (30.9) |
| Gemcitabine + platinum | 287 (25.2) |
| Docetaxel + platinum | 247 (21.7) |
| None | 253 (22.2) |
a, Values are expressed as mean ± standard deviation. FEV1.0, Forced expiratory volume in 1 second; VATS, video-assisted thoracic surgery; c-VATS, complete VATS; a-VATS, assisted VATS.