7,525
Participants
Start Date
January 31, 1996
Primary Completion Date
September 30, 1997
Study Completion Date
March 31, 2008
Estrogen hormone therapy
Estrogen pill daily
Estrogen plus progesterone hormone therapy
Estrogen plus progesterone hormone therapy pill (Prempro) daily
Placebo
Placebo pill daily
Wake Forest University Health Sciences, Winston-Salem
Wake Forest University Health Sciences
OTHER
National Heart, Lung, and Blood Institute (NHLBI)
NIH