Table I.
Clinical features of patients with various subtypes of lung cancer.
| A, Adenocarcinoma (n=87) | |||
|---|---|---|---|
| Characteristic | Stage I | Stage II | Stage III |
| Patients, n | 34 | 22 | 31 |
| Age, years | |||
| Mean ± SE | 66.4±1.5 | 66.6±1.8 | 65.8±1.2 |
| Range | 50–80 | 53–80 | 47–81 |
| Gender, n | |||
| Male | 20 | 15 | 18 |
| Female | 14 | 7 | 13 |
| Smoking status, n | |||
| Non-smoker | 13 | 4 | 8 |
| Smoker | 21 | 18 | 23 |
| BI of smoker, mean ± SE | 921.2±57.5 | 829.2±108.0 | 1137.6±137.9 |
| B, Squamous cell carcinoma (n=44) | |||
| Characteristic | Stage I | Stage II | Stage III |
| Patients, n | 33 | 2 | 9 |
| Age, years | |||
| Mean ± SE | 68.4±1.5 | 66.5±7.6 | 70.9±3.4 |
| Range | 55–79 | 59–74 | 48–82 |
| Gender, n | |||
| Male | 30 | 2 | 7 |
| Female | 3 | 1 | 2 |
| Smoking status, n | |||
| Non-smoker | 1 | 0 | 1 |
| Smoker | 32 | 2 | 8 |
| BI of smoker, mean ± SE | 1179.4±83.7 | 935.6±231.1 | |
| C, Large cell neuroendocrine carcinoma (n=13) | |||
| Characteristic | Stage I | Stage II | Stage III |
| Patients, n | 13 | 0 | 0 |
| Age, years | |||
| Mean ± SE | 69.3±2.8 | ||
| Range | 58–79 | ||
| Gender, n | |||
| Male | 12 | ||
| Female | 1 | ||
| Smoking status, n | |||
| Non-smoker | 1 | ||
| Smoker | 12 | ||
| BI of smoker, mean ± SE | 1012.9±118.0 | ||
| D, Small cell carcinoma (n=13) | |||
| Characteristic | Stage I | Stage II | Stage III |
| Patients, n | 10 | 2 | 1 |
| Age, years | |||
| Mean ± SE | 69.1±2.9 | ||
| Range | 56–79 | 62–73 | 80 |
| Gender, n | |||
| Male | 9 | 2 | 0 |
| Female | 1 | 1 | 1 |
| Smoking status, n | |||
| Non-smoker | 0 | 0 | 0 |
| Smoker | 10 | 2 | 1 |
| BI of smoker, mean ± SEM | 948±127.4 | ||
SE, standard error of the mean; BI, Brinkman index.