Comparative study of the Progesterone T (65 μg daily) and Copper 7 IUD

Abstract

In a randomized clinical trial 146 Progesterone T IUDs were compared to 149 Copper 7 IUDs. The clinical performance of both devices was very similar. The pregnancy rates were 1.4 and 1.5 per 100 woman-years, respectively; medical removal rates 2.8 and 3.0; expulsions 4.2 and 5.8; and continuation rates at 12 months 87.2% and 84.6%. All medical removals in the Copper 7 group were for excessive bleeding. Irregular bleeding was higher in the Copper 7 group (13.4%) than in the Progesterone T group (7.5%). The disadvantage of the Progesterone T both for the patient and health services is the need for removal and reinsertion of the device at approximately yearly intervals but it has the advantage that the menstrual blood loss is reduced as compared to preinsertion blood loss. © 1977.