Fig. 3

Estimated joint effects of AMH and FSH on live birth rates by two-dimensional generalized additive mixed models for patients from different age groups. a 30 years old, b 35 years old, c 37 years old, and d 40 years old. Green: good prognosis (AMH ≥ 1 ng/ml & FSH < 10 mIU/ml); Yellow: poor prognosis (AMH < 1 ng/ml & FSH ≥ 10 mIU/ml); Red: FSH reassuring group (AMH < 1 ng/ml & FSH < 10 mIU/ml); Grey: AMH reassuring group (AMH ≥ 1 ng/ml & FSH > 10 mIU/ml)