Table 1 Characteristics of the study subjects
Characteristics | Lung cancer Patients (n = 111) | Healthy controls (n = 44) |
|---|---|---|
Sex (female) (%) | 72 (64.86) | 20 (45.45) |
Age (years), mean (SD) | 64.41 (11.85) | 33.23 (8.35) |
Never smoked (%) | 83 (74.77) | 42 (95.45) |
Habitual cooking (%) | 52 (47.27) | 6 (13.64) |
Burning incense (%) | 37 (33.64) | 0 (0) |
Burning essential oils (%) | 6 (5.45) | 1 (2.27) |
Family history of lung cancer (%) | 30 (27.52) | 7 (15.91) |
Stage | ||
 I (%) | 87 (78.38) | – |
 II (%) | 6 (5.41) | – |
 III (%) | 10 (9.01) | – |
 IV (%) | 8 (7.21) | – |
Pathology | ||
 Adenocarcinoma (%) | 108 (97.30) | N/A |
 Squamous cell carcinoma (%) | 1 (0.90) | N/A |
 Adenoid cystic carcinoma (%) | 1 (0.90) |  |
 Lymphoepithelial-like carcinoma (%) | 1 (0.90) |  |