LAUSR

BACKGROUND For persons of childbearing potential prescribed isotretinoin, the iPLEDGE program requires use of two simultaneous methods of contraception or commitment to abstinence. OBJECTIVE To model the relative effectiveness of a variety of contraception strategies for patients taking isotretinoin including those that are acceptable according to iPLEDGE. METHODS We performed a decision analysis modeling the estimated rate of pregnancy with various contraception strategies during a typical six-month course of isotretinoin. RESULTS Tier 1 contraception options (e.g. subdermal hormonal implant, intrauterine devices) each had effectiveness of greater than 99.5% alone. When combined with a secondary form of contraception, Tier 2 contraception options (e.g. depot medroxyprogesterone injections, combined oral contraceptives) each had effectiveness greater than 99%. LIMITATIONS Sensitivity analyses were conducted to evaluate the impact of uncertain parameters on the results. CONCLUSION There may be opportunities to simplify iPLEDGE by recognizing the high effectiveness of Tier 1 contraception options and increasing use of secondary forms of contraception among those using Tier 2 contraception options as their primary form of contraception. Future studies are needed to understand the most effective strategies in clinical practice to prevent unintended pregnancy for patients taking isotretinoin to improve outcomes and provide patient-centered care.