Secondary analysis design. We conducted an analysis of the effectiveness of interventions in a randomized trial (the Diabetes Prevention Program), among postmenopausal women who were either 1) oral estrogen users at baseline and at 1-year follow-up or 2) non-estrogen users at baseline and at 1-year follow-up.
Adapted from: Kim C et al. Reduction in Glucose Among Postmenopausal Women Who Use and Do Not Use Estrogen Therapy. Menopause, 2012, In press.