Table 1.
Clinicopathologic profiles of all patients
| Variable | Group V (n = 35) | Group T (n = 33) | p-value |
|---|---|---|---|
| Age, years (mean) | 75.0 ± 6.2 | 69.2 ± 8.5 | 0.0021 |
| Sex (%) | 0.93 | ||
| Male | 31 (88.6) | 30 (90.9) | |
| Female | 4 (11.4) | 3 (9.1) | |
| Never-smokers (%) | 4 (11.4) | 5 (15.2) | 0.92 |
| %VC, % (mean) | 101.4 ± 21.5 | 106.4 ± 20.1a | 0.33 |
| %FEV1, % (mean) | 102.9 ± 21.8 | 96.9 ± 22.4a | 0.27 |
| FEV1%, % (mean) | 72.4 ± 9.2 | 68.8 ± 11.7a | 0.18 |
| Comorbidity (%) | |||
| Diabetes mellitus | 8 (22.9) | 7 (21.2) | 0.90 |
| Heart disease | 7 (20.0) | 5 (15.2) | 0.84 |
| Location of lesions (%) | 0.33 | ||
| Right upper lobe | 4 (11.4) | 9 (27.3) | |
| Right middle lobe | 1 (2.9) | 2 (6.1) | |
| Right lower lobe | 12 (34.3) | 6 (18.2) | |
| Left upper lobe | 9 (25.7) | 6 (18.2) | |
| Left lower lobe | 9 (25.7) | 10 (30.3) | |
| Clinical N status (%) | 0.053 | ||
| N0 | 25 (71.4) | 16 (48.5) | |
| N1-2 | 10 (28.6) | 17 (51.5) | |
| Procedure type (%) | 0.73 | ||
| Lobectomy | 31 (88.6) | 27 (81.8) | |
| Segmentectomy | 1 (2.9) | 2 (6.1) | |
| Complex lobectomy | 3 (8.6) | 4 (12.1) | |
| Nodal dissection (%) | 0.65 | ||
| ND0/1 | 9 (25.7) | 6 (18.2) | |
| ND2 | 26 (74.3) | 27 (81.8) | |
| Pathologic tumor size, mm (mean) | 64.7 ± 11.0 | 73.9 ± 14.8 | 0.0050 |
| Histology (%) | 0.0058 | ||
| Adenocarcinoma | 20 (57.1) | 10 (30.3) | |
| Squamous cell carcinoma | 14 (40.0) | 14 (42.4) | |
| Others | 1 (2.9) | 9 (27.2) | |
| Pathologic pleural invasion (%) | 0.089 | ||
| Negative | 21 (60.0) | 13 (39.4) | |
| Positive | 14 (40.0) | 20 (60.6) | |
| Pathologic N status (%) | 0.73 | ||
| N0 | 23 (65.7) | 23 (69.7) | |
| N1/2 | 12 (34.3) | 10 (30.3) | |
| Pathologic stage (%) | 0.34 | ||
| II | 24 (68.6) | 26 (78.8) | |
| III/IV | 11 (31.4) | 7 (21.2) | |
a The subjects were 32 patients who underwent respiratory function testing. VC: vital capacity; FEV1: forced expiratory volume in 1 second; Complex lobectomy: lobectomy exceeding one lobe; ND: nodal dissection