A cohort study of the efficacy of the dienogest and the gonadotropin-releasing hormone agonist in women with adenomyosis and dysmenorrhea

Dienogest effectively alleviates the symptoms of dysmenorrhea in patients with adenomyosis, but it cannot improve the anemia or reduce the size of the uterus. GnRH-a is more effective in improving anemia and reducing the uterine volume in patients with adenomyosis. TRIAL REGISTRATION: ChiCTR1900024958.