Fig 3.

Initial report of a mammogram with (A) recommendation for short-interval follow-up or suggestive or highly suggestive of cancer and (B) initial report of breast biopsy for participants by year on study and random assignment group. Women in the conjugated equine estrogen (CEE) group had about a 4% greater risk of a mammogram with recommendation for short-interval follow-up after 1 year and 9% greater risk after 5 years of use (P < .001). Women in the CEE group had about a 2% greater risk of having a biopsy after 5 years of use (P = .004). Standard error (SE) bars were plotted at each data point but may not be visible because of their small sizes relative to the data point.