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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Ann Intern Med. 2010 Feb 16;152(4):211–217. doi: 10.1059/0003-4819-152-4-201002160-00005

Figure 1.

Figure 1

Proportion of women who took at least 80% of the study pills by treatment arm, the Women's Health Initiative estrogen-plus-progestin randomized trial