Table 4. Clinical and demographic characteristics of the individuals included in the study.
| Total number | Training data set | Validation set | |||||
|---|---|---|---|---|---|---|---|
| Healthy | ES/NSCLC | AS/NSCLC | Healthy | BPD | ES/NSCLC | AS/NSCLC | |
| 74 | 72 | 70 | 13 | 27 | 20 | 20 | |
| Gender | |||||||
| Female | 13 | 8 | 12 | 2 | 13 | 5 | 7 |
| Male | 61 | 64 | 58 | 11 | 14 | 15 | 13 |
| Age ± s.e.ma | 56 ± 1.55 | 63 ± 1.17 | 63 ± 1.29 | 47 ± 1.78 | 52 ± 2.88 | 68 ± 1.48 | 61 ± 2.28 |
| Smoking habits | |||||||
| Ex-smoker | 22 | 25 | 21 | 1 | 8 | 9 | 10 |
| Smoker | 31 | 42 | 20 | 8 | 7 | 8 | 4 |
| Non-smoker | 21 | 5 | 5 | 3 | 11 | 3 | 6 |
| Unknown | 24 | 1 | 1 | ||||
| Histology | |||||||
| Adenocarcinoma | 24 | 32 | 9 | 16 | |||
| Large-cell carcinoma | 2 | 4 | 1 | 1 | |||
| Squamous-cell carcinoma | 38 | 27 | 9 | ||||
| Other or unspecified | 8 | 7 | 1 | 3 | |||
| Stage | |||||||
| IA | 10 | 5 | |||||
| IB | 27 | 4 | |||||
| IIA | 1 | 5 | |||||
| IIB | 17 | 4 | |||||
| IIIA | 17 | 2 | |||||
| IIIB | 18 | ||||||
| IV | 52 | 20 | |||||
| Other pathology | |||||||
| COPD | 9 | ||||||
| TBC | 3 | ||||||
| Pneumonia | 4 | ||||||
| CB | 2 | ||||||
| Other | 9 | ||||||
Abbreviations: ES/NSCLC, early-stage non-small cell lung cancer; AS/NSCLC, advanced-stage non-small cell lung cancer; BPD, benign pulmonary diseases; COPD, chronic obstructive pulmonary disease; TBC, tuberculosis; CB, chronic bronchitis.
a
Age=mean years at time of sample collection ± s.e.m (standard error of mean).