Fig. 3

The clinical outcome of different total Gn dosage groups with AMH stratification. The IVF-ET cycles of 2 embryos at the cleavage stage with endometrial thickness ≥ 7 mm on ET day were included. D1, E1, F1: female age < 35 years; D2, E2, F2: female aged 35–42 years. AMH anti-Müllerian hormone, Gn gonadotropin. Group A: < 1875 IU, Group B: 1875–3750 IU, Group C: ≥ 3750 IU. *P < 0.05, **P < 0.01, ***P < 0.001