Table 1.
Demographic characteristics of the 509 lung cancer patients.
| Parameters | Total Number | % |
|---|---|---|
| Patient age (mean±SD), years | (62.5±11.2) | |
| Number of patients | 509 | 100% |
| Gender | ||
| Male | 294 | 57.8% |
| Female | 215 | 42.2% |
| Histology type of primary tumor | ||
| Adenocarcinoma | 187 | 37.3% |
| 11 | 2.1% | |
| Large cell carcinoma | 24 | 4.7% |
| Small cell lung cancer | 74 | 14.5% |
| Squamous cell carcinoma | 146 | 28.7% |
| Undefined | 67 | 13.2% |
| Stages of cancer | ||
| Ia/Ib | 37 | 7.3% |
| IIa/IIb | 28 | 5.5% |
| IIIa/IIIb | 74 | 14.5% |
| IV | 274 | 53.8% |
| Extensive a | 58 | 11.4% |
| Limited b | 15 | 2.9% |
| Undefined | 23 | 4.5% |
| Surgical procedure | ||
| Yes | 103 | 20.2% |
| No | 406 | 79.8% |
| Surgical procedure type | ||
| Bi-lobectomy | 1 | 1.0% |
| Lobectomy | 69 | 67.0% |
| Pneumectomy | 15 | 14.5% |
| Segmentectomy | 9 | 8.7% |
| Thoracotomy | 9 | 8.7% |
| Disease recurrence | ||
| Yes | 127 | 24.9% |
| No | 382 | 75.1% |
| Smoker | ||
| Yes | 400 | 78.6% |
| No | 109 | 21.4% |
| Cigarette packs per year | ||
| (mean ± SD) | (50.5±32.9) |
a
Extensive disease: Beyond the ipsilateral hemithorax, which may include malignant pleural or pericardial effusion or hematogenous metastases (TNM: T any, N any, M Ia/b; T3-T4 due to multiple lung nodules that do not fit in a tolerable radiation field; 9).
b
Limited disease: Confined to the ipsilateral hemithorax, which can be safely encompassed within a tolerable radiation field (TNM: T any, N any, M 0; except T3-T4 due to multiple lung nodules that do not fit in a tolerable radiation field; 9).