| Tumor size, cm |
|
|
| P < 0.001 |
| T1a (≤1 cm) | 44 (20.6) | 107 (56.6) | 108 (54.0) |
|
| T1b (1~2 cm) | 93 (43.4) | 72 (38.1) | 77 (38.5) |
|
| T1c (2~3 cm) | 77 (36.0) | 10 (5.3) | 15 (7.5) |
|
| CTR |
|
|
| P < 0.001 |
| CTR = 0 | 9 (4.2) | 25 (13.2) | 10 (5.0) |
|
| 0 < CTR ≤ 0.5 | 35 (16.4) | 82 (43.4) | 50 (25.0) |
|
| 0.5 < CTR < 1 | 140 (65.4) | 81 (42.9) | 112 (56.0) |
|
| CTR = 1 | 30 (14.0) | 1 (0.5) | 28 (14.0) |
|
| Histology |
|
|
| P < 0.001 |
| AIS | 6 (2.8) | 10 (5.3) | 27 (13.5) |
|
| MIA | 9 (4.2) | 71 (37.6) | 69 (34.5) |
|
| APA | 116 (54.2) | 79 (41.8) | 67 (33.5) |
|
| PPA | 52 (24.3) | 11 (5.8) | 12 (6.0) |
|
| MPA | 7 (3.3) | 1 (0.5) | 1 (0.5) |
|
| LPA | 18 (8.4) | 16 (8.5) | 22 (11.0) |
|
| SPA | 6 (2.8) | 1 (0.5) | 2 (1.0) |
|
| pN |
|
|
| 0.018 |
| N0 | 194 (90.7) | 184 (97.4) | 187 (93.5) |
|
| N1 | 6 (2.8) | 4 (2.1) | 6 (3.0) |
|
| N2 | 3 (1.4) | 1 (0.5) | 3 (1.5) |
|
| N1 + N2 | 11 (5.1) | 0 (0.0) | 4 (2.0) |
|
| cN/pN up-staging |
|
|
| 0.022 |
| Yes | 20 (9.3) | 5 (2.6) | 13 (6.5) |
|
| No | 194 (90.7) | 184 (97.4) | 187 (93.5) |
|
| Time of intubation | 4.0 | 2.0 | 3.0 | P < 0.001 |
| Time of hospital | 8.0 | 7.0 | 8.0 | P < 0.001 |
| Postoperative complications |
|
|
| P < 0.001 |
| Atrial fibrillation | 15 (7.0) | 1 (0.5) | 5 (2.5) |
|
| Arrhythmia | 7 (3.3) | 0 (0.0) | 1 (0.5) |
|
| Pneumonia | 13 (6.1) | 16 (8.5) | 17 (8.5) |
|
| Pulmonary air leakage | 7 (3.3) | 0 (0.0) | 0 (0.0) |
|
| Chylothorax | 2 (0.9) | 0 (0.0) | 0 (0.0) |
|