Figure 2.

Risk estimates for pancreatic cancer associated with cigarette smoking for current smokers, by study. Solid shapes represent odds ratios; horizontal lines represent confidence intervals. The magnitude of effect size and width of the confidence intervals affect the size of the solid shapes represented. CPS II, Cancer Prevention Study II; EPIC, European Prospective Investigation into Cancer and Nutrition; NYU–WHS, New York University Women's Health Study; PLCO, Prostate, Lung, Colorectal, Ovarian Cancer Screening Trial; SMWHS, Shanghai Men's and Women's Health Study; WHI, Women's Health Initiative.