Table 2.
<30 years |
≥30 years |
|||
---|---|---|---|---|
OR | 95% CI | OR | 95% CI | |
Ever smoker | 4.14 | 1.57, 11.35 | 1.23 | 0.55, 2.78 |
Lifetime non-smoker | Ref | Ref |
Breslow-Day test of homogeneity, P= 0.038
95% confidence interval is from the exact method for contingency tables