Table I.
Demographic and clinical characteristics of included patients.
| Primary lung cancer N (%) |
No cancer N (%) |
Total N (%) |
|
|---|---|---|---|
| Age | |||
| Mean; SD | 68; 9 | 66; 10 | 67; 10 |
| Gender | |||
| Women | 63 (54) | 43 (44) | 106 (49) |
| Men | 54 (46) | 55 (56) | 109 (51) |
| Education | |||
| Elementary school | 23 (20) | 17 (18) | 40 (19) |
| High school | 60 (51) | 37 (38) | 97 (45) |
| University | 28 (24) | 38 (39) | 66 (31) |
| Other | 6 (5) | 5 (5) | 11 (5) |
| Missing data | – | 1 | 1 |
| Smoking status | |||
| Smoker | 49 (42)* | 26 (27) | 75 (35) |
| Former smoker | 58 (50)* | 42 (43) | 100 (47) |
| Never smoker | 10 (8) | 29 (30) | 39 (18) |
| Missing data | – | 1 | 1 |
| Tumor type | |||
| NSCLC1 | 94 (80) | – | – |
| SCLC | 8 (7) | – | – |
| Other2 | 15 (13) | – | – |
| Disease stage | |||
| I-IIIA | 58 (50) | – | – |
| IIIB-IV | 58 (50) | – | – |
| Missing data | 1 | – | – |
NSCLC, non-small cell lung cancer; SCLC, small cell lung cancer.
1
Includes adenocarcinoma, squamous cancer, adenosquamous cancer and other unspecified NSCLC.
2
Includes carcinoids, mesothelioma, multiple tumors of different kinds and unverified tumors.
*
P-value < 0.05.