Table 1. Demographic data of the 833 samples from the 799 cases.
| Parameter | Total |
|---|---|
| Gender | |
| Male | 392 (49.1%) |
| Female | 407 (50.9%) |
| Age | |
| 39–59 | 171 (21.4%) |
| 60–74 | 460 (57.6%) |
| 75–90 | 168 (21.0%) |
| Smoking History | |
| Never Smoked | 55 (6.9%) |
| Ever Smoked | 744 (93.1%) |
| Tumour Typea | |
| Adenocarcinoma | 557 (66.9%) |
| Squamous cell carcinoma | 198 (23.8%) |
| Large cell carcinoma (including large cell neuroendocrine carcinoma) | 53 (6.4%) |
| Pleomorphic carcinoma | 12 (1.4%) |
| Carcinoid | 13 (1.5%) |
| Tumour Stagea | |
| I (a and b) | 437 (52.5%) |
| II (a and b) | 217 (26.1%) |
| III (a and b) | 165 (19.8%) |
| IV | 7 (0.8%) |
| Unknown | 7 (0.8%) |
| Surgery | |
| Lobectomy | 634 (79.4%) |
| Pneumonectomy | 73 (9.1%) |
| Wedge resection | 73 (9.1%) |
| Segmentectomy | 16 (2.0%) |
| Lymph node excision | 2 (0.3%) |
| Bi-lobectomy | 1 (0.1%) |
| Five-year survival (mortality) | |
| Median number | 100 months |
aUsed the total 833 tumour samples to calculate.