Table 4.
Years since quittinga | ||
---|---|---|
Lifetime Cigarette Frequency of Usec | <10 | >=10 |
OR (95% CI)b | OR (95% CI)b | |
<40 years smoked | 1.3 (0.81 - 2.2) | 1.0 (0.76 - 1.3) |
>=40 years smoked | 1.8 (1.1 - 2.9) | 0.99 (0.56 - 1.7) |
Test for Homogeneityd (p-value) | 0.29 | |
<20 cigarettes/day | 1.8 (1.2 - 2.8) | 0.96 (0.71 - 1.3) |
>= 20 cigarettes/day | 1.3 (0.75 - 2.2) | 1.0 (0.73 - 1.5) |
Test for Homogeneityd (p-value) | 0.26 | |
<40 packyears | 1.8 (1.1 - 2.8) | 0.96 (0.73 - 1.3) |
>= 40 packyears | 1.4 (0.83 - 2.3) | 1.2 (0.74 - 1.8) |
Test for Homogeneityd (p-value) | 0.45 |
a The number of participants may vary because of missing data
b Compared with nonsmokers. Adjusted for: age, education, race, ethnicity, diabetes, pancreatitis, gallbladder disease, alcohol intake and body mass index
c Includes smokers who quit ≥1 year prior to diagnosis/interview
d Breslow-Day test