AMH and Infertility: Logistic regression analysis for clinical pregnancy, ongoing pregnancy, and early miscarriage considering age, BMI, AMH, serum vitamin D status, infertility type, FT4, TT4, TSH, TAI/non-TAI, protocol of COS, antral follicle count, number of retrieved oocytes and good-quality embryos, and embryo culture duration (day 3 or 5) only indicated that aging prevented women from achieving clinical pregnancy (0.948; 95% confidence interval [CI], 0.905–0.993; P=0.024) and ongoing pregnancy (0.946; 95% CI, 0.901–0.993; P=0.026) (Table 4).