AMH and Infertility: When the endometrial thickness change ratio was taken as a continuous variable, a higher endometrial thickness change ratio (per 10%) was associated with a higher clinical pregnancy rate, whether in the unadjusted model (OR 1.24; 95% CI, 1.02–1.52; P = .034) or in the model with the adjustment for female age at blastocyst transfer, BMI, infertility duration, infertility type, AMH, genetic category and estradiol on the day of progesterone administration (aOR 1.29; 95% CI, 1.01–1.64; P = .040).