Objective: This study examined the impact of the Women's Health Exchange (WHE), a program aimed at educating women about menopause and estrogen replacement therapy, on patient continuance with Estraderm, a transdermal estrogen replacement medication.
Design: The prescription database of Express Scripts, Inc., a pharmacy benefits management company serving a large, nationwide insured population, was used for the study. All study subjects had one or more claims for Estraderm between 2/1/95 and 8/31/95. The intervention group consisted of 299 WHE enrollees, and the control group comprised a random sample of 1,513 patients who had not enrolled in WHE.
Results: A multivariate Cox regression model found that older age, longer prior length of Estraderm use, progestin use, and patronage of a mail-order pharmacy were associated with increased continuance. Controlling for these factors and for HMO enrollment and copay amount, the likelihood of discontinuing Estraderm was significantly lower for WHE enrollees compared to non-WHE enrollees. Sensitivity analyses tested the effects of preexisting differences between the WHE and control group subjects on study findings. Even when WHE enrollees were compared with control subjects having similar medication costs, disease severity, or continuance with chronic medications, WHE enrollment was associated with an increased length of Estraderm therapy.
Conclusions: These findings suggest that patient education programs may improve continuance with transdermal hormone replacement therapy for patients with a prescription benefit.