Table 2. Distribution of CSC marker genotypes and characteristics of the case group and the healthy control group.
| Characteristic | Case group | Control group | |
| (n = 500) | (n = 500 ) | ||
| rs2286455 | AA | 46 (9.2%) | 37 (7.4%) |
| GG | 266 (53.2%) | 262 (52.4%) | |
| GA | 188 (37.6%) | 201 (40.2%) | |
| rs1342024 | GG | 97 (19.4%) | 92 (18.4%) |
| CC | 164 (32.8%) | 166 (33.2%) | |
| GC | 239 (47.8%) | 242 (48.4%) | |
| rs13959 | TT | 89 (17.8%) | 99 (19.8%) |
| CC | 176 (35.2%) | 159 (31.8%) | |
| CT | 235 (47.0%) | 242 (48.4%) | |
| rs2522137 | TT | 219 (43.8%) | 219 (43.8%) |
| GG | 67 (13.4%) | 39 (7.8%) | |
| GT | 214 (42.8%) | 242 (48.4%) | |
| rs17036526 | GG | 224 (44.8%) | 233 (46.6%) |
| CC | 55 (11.0%) | 65 (13.0%) | |
| CG | 221 (44.2%) | 202 (40.4%) | |
| Gender | male | 305 (61%) | 302 (60.4%) |
| female | 195 (39%) | 198 (39.6%) | |
| Age | <30 | 2 (0.4%) | 5 (1.0%) |
| 30–39 | 14 (2.8%) | 16 (3.2%) | |
| 40–49 | 64 (12.8%) | 70 (14.0%) | |
| 50–59 | 176 (35.2%) | 196 (39.2%) | |
| 60–69 | 174 (34.8%) | 148 (19.7%) | |
| ≥70 | 70 (14.0%) | 65 (13.0%) | |
| Education | Junior high school and lower | 318 (63.6%) | 130 (26.0%) |
| High school | 97 (19.4%) | 144 (28.8%) | |
| Greater than high school | 85 (17.0%) | 226 (45.2%) | |
| Smoking | Pack years | 14.25 (0–36.0) | 0.0 (0.0–6.9) |
| exposure to | Absent | 398 (79.6%) | 473 (94.6%) |
| Pesticide | Present | 102 (20.4%) | 27 (5.4%) |
| exposure to | Absent | 487 (97.4%) | 496 (99.2%) |
| Gasoline/diesel | Present | 13 (2.6%) | 4 (0.8%) |
| exposure to Ink | Absent | 493 (98.6%) | 497 (99.4%) |
| Present | 7 (1.4%) | 3 (0.6%) | |
| Cooking emissions | Absent | 244 (48.8%) | 250 (50.0%) |
| (Total dish-years) | ≤50 | 149 (29.8%)) | 152 (30.4%) |
| 51–100 | 61 (12.2%) | 80 (16.0%) | |
| 101–150 | 46 (9.2%) | 18 (3.6%) | |
| Pneumonia | History Absent | 477 (95.4%) | 490 (98.0%) |
| History Present | 23 (4.6%) | 10 (2.0%) | |
| COPD | History Absent | 449 (89.8%) | 489 (97.8%) |
| History Present | 51 (10.2%) | 11 (2.2%) | |
| Pulmonary | History Absent | 470 (94.0%) | 486 (97.2%) |
| tuberculosis | History Present | 30 (6.0%) | 14 (2.8%) |
| Bronchial asthma | History Absent | 488 (97.6%) | 495 (99.0%) |
| History Present | 12 (2.4%) | 5 (1.0%) | |
| Family history | History Absent | 330 (66.0%) | 397 (79.4%) |
| of cancer | History Present | 170 (34.0%) | 103 (20.6%) |
| BMI | <18.5 | 49 (9.8%) | 15 (3.0%) |
| (kg/m2) | 18.5–24 | 302 (60.4%) | 230 (46.0%) |
| ≥24 | 149 (29.8%) | 255 (51.0%) | |