Figure 1.

Forest plots showing adjusted estimates and 95% confidence intervals (CIs) for the association between regular use of aspirin and risk of endometrial cancer (A) overall, by study design with estimates ordered from smallest to largest and (B) stratified by participant characteristics and tumor type. The size of the box indicates the weight of the study, the line represents the 95% CI and the diamonds represent the pooled estimates. OR, odds ratio; EDGE, Estrogen, Diet, Genetics and Endometrial Cancer Study; ANECS, The Australian National Endometrial Cancer Study; FHCRC, Fred Hutchinson Cancer Research Center Study; CONN, Connecticut Endometrial Cancer Study; PEDS, Patient Epidemiologic Data System; BWHS, Black Women’s Health Study; NIH, NIH AARP Diet and Health Study; IOWA, Iowa Women’s Health Study; PLCO, Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial; MEC, Multiethnic Cohort Study; SWLHS, Swedish Women's Lifestyle and Health Study; BCDDP, Breast Cancer Detection Demonstration Project.