Table 1.
Patient clinical features (x̅ ± s/(%))
| Group V (n = 174) | Group A (n = 93) | Group M (n = 67) | P-value | |
|---|---|---|---|---|
| Gender (male,%) | 94 (54.0) | 36 (38.7) | 37 (55.2) | 0.040 |
| Age (year) | 62.8 ± 10.8 | 62.6 ± 10.5 | 60.8 ± 9.8 | 0.369 |
| History of smoking (n,%) | 69 (39.7) | 23 (24.7) | 28 (41.8) | 0.026 |
| Patient with pulmonary infections (n, %) | 8 (4.6) | 12 (12.9) | 1 (1.5) | 0.008 |
| Pre-operation complications (n,%) | 102 (58.6) | 56 (60.2) | 40 (59.7) | 0.966 |
| History of malignancy (n,%) | 7 (4.0) | 8 (8.6) | 4 (6.0) | 0.304 |
| Lesion diameter (cm) | 2.9 ± 1.6 | 2.8 ± 1.4 | 3.1 ± 4.3 | 0.732 |
| Elevate pre-operative CEA (n, %) | 27 (15.5) | 8 (8.6) | 10 (14.9) | 0.267 |
| Lesion location | 0.000 | |||
| Right upper lobe | 76 (62.8) | 12 (9.9) | 33 (27.3) | |
| Right middle lobe | 27 (73.0) | 9 (24.3) | 1 (2.7) | |
| Right lower lobe | 17 (27.9) | 43 (70.5) | 1 (1.6) | |
| Left upper lobe | 41 (58.6) | 3 (4.3) | 26 (37.1) | |
| Left lower lobe | 13 (28.9) | 26 (57.8) | 6 (13.3) | |
| Pre-operation pulmonary function (% Pre) | ||||
| FEV1 | 2.4 ± 0.6 | 2.2 ± 0.6 | 2.5 ± 0.7 | 0.277 |
| FEV1 /FVC | 76.5 ± 8.4 | 75.5 ± 8.5 | 78.5 ± 11.1 | 0.274 |
| FEV1/pre | 82.7 ± 14.9 | 84.2 ± 15.9 | 88.3 ± 15.5 | 0.055 |
CEA: carcinoembryonic antigen; FEV1: forced expiratory volume in one second; FVC: forced vital capacity