AMH and polycystic ovary syndrome: The PCOS group had a significantly longer duration of infertility (7 years versus vs. 4 years, p<0.001), but better ovarian reserve, with higher AFC (26 vs. 12, p<0.001) and higher serum AMH level (7.48 vs. 2.89 ng/ml, p<0.001) compared with the control group.