Fig. 2From: Risk factors for low oocyte retrieval in patients with polycystic ovarian syndrome undergoing in vitro fertilization(a) Comparison of low ORR events occurring in conditions of different triggers with the same ovarian stimulation protocol by the χ2 test or Fisher’s exact test. (b) Comparison of low ORR events occurring in conditions of different ovarian stimulation protocols with the same trigger administration by the χ2 test or Fisher’s exact testMPA, medroxyprogesterone acetate; r-hCG, recombinant human chorionic gonadotropin; GnRH-a, gonadotrophin releasing hormone agonistBack to article page