Figure 1. Potential Participants, Exclusions, and Cohort Development for the Women’s Health Initiative.

^aThis exclusion indicates all cancers except nonmelanoma skin cancer (ie, patients with nonmelanoma skin cancer were not excluded).

^bIndicates new cases of liver cancer and confirmed deaths over a median 20.9 years of follow-up.

^cOne serving was defined as 12 fl oz or 355 mL.