Table 2. Patients’ characteristics in the VE and OE groups after propensity score-matching.
| Variables | VE (n=42) | OE (n=42) | P value |
|---|---|---|---|
| Sex (male) | 40 (95.2) | 39 (92.9) | 0.665 |
| Age (years) | 63.3±7.7 | 64.3±7.2 | 0.577 |
| BMI (kg/m2) | 22.1±2.7 | 21.9±2.9 | 0.773 |
| FEV1 predicted (%) | 104.4±18.5 | 103.2±13.9 | 0.714 |
| Charlson Comorbidity index | 0.513 | ||
| 2 | 26 (61.9) | 21 (50.0) | |
| 3 | 13 (31.0) | 20 (47.6) | |
| 4 | 3 (7.1) | 1 (2.4) | |
| Tumor location | 0.796 | ||
| Middle thoracic | 30 (71.4) | 31 (73.8) | |
| Lower thoracic | 12 (28.6) | 11 (26.2) | |
| Tumor type | 1.000 | ||
| Squamous cell carcinoma | 39 (92.9) | 39 (92.9) | |
| Others | 3 (7.1) | 3 (7.1) | |
| Tumor grade | 0.496 | ||
| Well differentiated | 11 (26.2) | 12 (28.6) | |
| Moderate differentiated | 26 (61.9) | 28 (66.7) | |
| Poorly differentiated | 5 (11.9) | 2 (4.8) | |
| Pathologic T stage | 0.914 | ||
| 1 | 28 (66.7) | 29 (69.0) | |
| 2 | 3 (7.1) | 2 (4.8) | |
| 3 | 11 (26.2) | 11 (26.2) | |
| Pathologic N stage | 0.870 | ||
| 0 | 25 (59.5) | 25 (59.5) | |
| 1 | 12 (28.6) | 13 (31.0) | |
| 2 | 5 (11.9) | 4 (9.5) | |
| Operative method | 1.000 | ||
| Ivor Lewis | 35 (83.3) | 35 (83.3) | |
| McKeown | 7 (16.7) | 7 (16.7) | |
| 3-FD | 4 (9.5) | 7 (16.7) | 0.366 |
Data were presented as number of patients (percentage) or mean ± standard deviation. Data in parenthesis indicate percentage. VE, video-assisted thoracoscopic surgery esophagectomy; OE, open esophagectomy; BMI, body mass index; FEV1, forced expiratory in 1 second; 3-FD, 3-field dissection.