Table I.
Basic data of patients in the two groups.
| Variable | Group A (n=23) | Group B (n=23) | P-value |
|---|---|---|---|
| Age | 66.1±11.23 | 64.2±10.61 | 0.18 |
| Males/females | 17/6 | 16/7 | 0.74 |
| Cancer stage (12) | |||
| IA | 4 (17.4%) | 3 (13.0%) | 0.85 |
| IB | 3 (13.0%) | 4 (17.4%) | |
| IIA | 5 (21.7%) | 6 (26.1%) | |
| IIB | 6 (26.1%) | 4 (17.4%) | |
| IIIA | 2 (8,7%) | 4 (17.4%) | |
| IIIB | 3 (13.0%) | 2 (8.7%) | |
| Histological type | |||
| Squamous cell carcinoma | 14 (60.1%) | 13 (56.5%) | 0.81 |
| Adenocarcinoma | 7 (30.4%) | 8 (34.8%) | |
| Large cell carcinoma | 2 (8.7%) | 2 (8.7%) | |
| Lung radiation dose | |||
| V5 | 26.8±0.84 | 27.4±0.98 | 0.90 |
| V20 | 40.6±1.32 | 48.3±0.93 | 0.25 |
| V30 | 48.4±1.09 | 55.4±1.11 | 0.46 |
| Smoking history | 42.5±2.11 | 48.7±1.98 | 0.45 |
| MLD | 48.4±2.17 | 55.4±1.96 | 0.46 |
MLD, minimum lethal dose; V5, % total lung volume receiving ≥5 Gy. Values are expressed as the mean ± standard deviation. The cancer staging is according to the 7th edition of the guidelines of the American Joint Committee on Cancer (12).