AMH and amenorrhea: Finally, longitudinal analyses confirmed a beneficial effect of high baseline AMH levels on the risk of amenorrhea during the follow‐up (ROR = 0.91 [95% CI = 0.86–0.97], p = 0.002) for differential time trends (per month) in the event rate for high versus low (> vs. ≤2.0 ng/mL) AMH groups.