Table 5.
Associations between smoking patterns and lung cancer among ever smokers
| CASES N = 574 (%) |
CONTROLS N = 416 (%) |
OR (95%CI) a | OR (95%CI) b | |
|---|---|---|---|---|
| SMOKE INHALATION | ||||
| No inhalation | 46 (8.1) | 73 (17.8) | Ref | Ref |
| Shallow | 130 (22.8) | 129 (31.4) | 1.57 (0.98; 2.50) | 1.02 (0.61; 1.73) |
| Deep | 274 (48.0) | 159 (38.7) | 2.57 (1.65; 4.00) | 1.22 (0.73; 2.03) |
| Mixed | 121 (21.2) | 50 (12.2) | 3.70 (2.20; 6.21) | 1.60 (0.90; 2.85) |
| FILTER USE | ||||
| Yes | 435 (75.9) | 348 (84.3) | Ref | Ref |
| No | 33 (5.8) | 26 (6.3) | 1.02 (0.58; 1.80) | 1.41 (0.74; 2.69) |
| Mixed | 105 (18.3) | 39 (9.4) | 2.33 (1.54; 3.51) | 1.57 (1.00; 2.44) |
| TYPE OF TOBACCO | ||||
| Blond | 289 (50.5) | 247 (60.1) | Ref | Ref |
| Dark | 69 (12.1) | 50 (12.2) | 1.36 (0.88; 2.09) | 1.47 (0.89; 2.40) |
| Mixed | 214 (37.4) | 114 (27.7) | 1.74 (1.28; 2.37) | 1.11 (0.79; 1.57) |
| TYPE OF CIGARETTE | ||||
| Light | 38 (6.6) | 50 (12.2) | Ref | Ref |
| Classic | 373 (65.0) | 278 (67.8) | 1.89 (1.18; 3.02) | 1.44 (0.87; 2.38) |
| Mixed | 163 (28.4) | 82 (20.0) | 2.85 (1.70; 4.77) | 1.70 (0.98; 2.96) |
Abbreviations: CI confidence interval, OR odds ratio
a Odds ratio adjusted for age (continuous), area of residence, education, and BMI 2 years before interview (continuous)
b Odds ratio adjusted for age (continuous), area of residence, education, BMI 2 years before interview (continuous), and the comprehensive smoking index (continuous)