Table 2.
Comparison of clinicopathological features between PBAC and non-PBAC patients
| PBAC (+) (n = 24) | PBAC (−) (n = 70) | p valuesa | |
|---|---|---|---|
| Mean age (range) | 66.3 (50–74) | 69.6 (51–82) | 0.043b |
| Male (%) | 22 (91.7) | 62 (88.6) | 0.967 |
| Current ex-smoker (%) | 24 (100) | 69 (98.6) | 0.573 |
| Comorbidity incidence (%) | 11 (45.8) | 39 (55.7) | 0.403 |
| Cardiac diseases | 0 | 7 (10.0) | 0.246 |
| Other cancers | 5 (20.8) | 13 (18.6) | 0.954 |
| Chronic hepatitis | 0 | 4 (5.7) | 0.541 |
| Respiratory dysfunctions | 7 (29.2) | 26 (37.1) | 0.480 |
| Tumor size (mm) | 49.2 | 39.1 | 0.008b |
| Surgical procedures (%) | |||
| Lobectomy | 23 (95.8) | 61 (87.1) | |
| Pneumonectomy | 1 (4.2) | 6 (8.6) | |
| Segmentectomy | 0 | 3 (4.3) | 0.352 |
| Pathological stage (%) | |||
| p Stage IIA | 12 (50.0) | 38 (54.3) | |
| p Stage IIB | 5 (20.8) | 15 (21.4) | |
| p Stage IIIA | 7 (29.2) | 17 (24.3) | 0.891 |
| Lymphatic invasion (%) | 6 (25.0) | 27 (38.6) | 0.229 |
| Vascular invasion (%) | 20 (83.3) | 53 (75.7) | 0.625 |
| Pleural invasion | 9 (37.5) | 23 (32.9) | 0.679 |
| Pathological N status (%) | |||
| pN0 | 1 (4.2) | 8 (11.4) | |
| pN1 | 18 (75.0) | 47 (67.1) | |
| pN2 | 5 (20.8) | 15 (21.4) | 0.564 |
| Recurrent (%) | 6 (25.0) | 15 (21.4) | 0.717 |
| Distant metastasis | 1 (16.7) | 4 (26.7) | |
| Locoregional | 6 (100) | 11 (73.3) | 0.921 |
PBAC: platinum-based adjuvant chemotherapy. aFisher’s exact test; bStudent’s t-test.