Data are presented as *Median (Interquartile range) and **Number (%). Group A: Single embryo transfer using a good-quality embryo, Group B: Double embryo transfer using two good-quality embryos, Group C: Double embryo transfer using one good-quality embryo plus one poor-quality embryo, *Analysis using Kruskal-Wallis test, **Analysis using Chi-square test, BMI: Body mass index, PCOS: Polycystic ovarian syndrome, IVF: In vitro fertilization, ICSI: Intracytoplasmic sperm injection, GnRH: Gonadotropin releasing hormone, AMH: Anti-Mullerian hormone, MII: Metaphase II, 2PN: 2 pronuclear. Here, GNRH1 is linked to polycystic ovary syndrome.