TABLE 3.
Passive Smoking Exposure and Risk of Pancreatic Cancer
| Total population |
Cigarette smokers |
Noncigarette smokers |
||||
|---|---|---|---|---|---|---|
| Exposure status | Cases/Controls 735/805 | AOR* 95% CI | Cases/Controls 441/393 | AOR* 95% CI | Cases/Controls 294/412 | AOR* 95% CI |
| Passive smoking | ||||||
| Never | 114/163 | 1 | 39/52 | 1 | 75/111 | 1 |
| Ever | 621/642 | 1.3 (0.9-1.7) | 402/341 | 1.7 (1.03-2.6) | 219/301 | 1.1 (0.8-1.6) |
| Childhood exposure | ||||||
| Occasionally | 74/96 | 1.2 (0.8-1.9) | 46/42 | 1.8 (0.95-3.4) | 28/54 | 0.9 (0.5-1.6) |
| Regularly | 394/401 | 1.3 (0.9-1.7) | 262/218 | 1.7 (1.0-2.8) | 132/183 | 1.1 (0.7-1.6) |
| Adulthood at home | ||||||
| Occasionally | 75/67 | 1.6 (1.02-2.5) | 43/33 | 2.2 (1.1-4.3) | 32/34 | 1.4 (0.7-2.5) |
| Regularly | 311/267 | 1.3 (0.96-1.9) | 231/156 | 1.9 (1.2-3.2) | 80/111 | 1.03 (0.7-1.6) |
| Adulthood at work | ||||||
| Occasionally | 103/149 | 0.9 (0.7-1.4) | 63/72 | 1.3 (0.7-2.3) | 40/77 | 0.8 (0.5-1.3) |
| Regularly | 235/213 | 1.4 (0.96-1.9) | 187/153 | 1.7 (1.02-2.8) | 48/60 | 1.2 (0.7-1.9) |
| Exclusive exposure | ||||||
| Childhood only | 95/133 | 1.2 (0.8-1.8) | 40/49 | 1.3 (0.7-2.5) | 55/84 | 1.2 (0.7-1.9) |
| Adulthood only | 153/145 | 1.3 (0.9-1.8) | 94/81 | 1.5 (0.9-2.6) | 59/64 | 1.3 (0.8-2.2) |
| Childhood & adulthood | 373/364 | 1.3 (0.9-1.8) | 268/211 | 1.8 (1.1-2.9) | 105/153 | 1.0 (0.6-1.5) |
*
AOR indicates odds ratio adjusted for age, sex, race/ethnicity, cigarette smoking, history of diabetes, alcohol consumption, educational level, state of residency, and marital status. All AOR values were estimated using the group of “never use” as the reference category.