In comparison to non-CI cases, those with CI exhibited significantly higher values in BMI (25.45 ± 3.81 vs. 24.70 (20.45, 25.40)), AMH (8.75 (4.66, 14.01) vs. 6.41 (4.08, 9.14)), frequency of hysteroscopy operations, frequency of curettages, the proportion of cases undergoing hysteroscopy operations within six months before pregnancy (22.8% vs. 16.0%), frequency of previous gravida, proportion of twin pregnancies (31.6% vs. 19.6%), and proportion of hypertension (14.0% vs. 4.4%). The gene discussed is AMH; the disease is Hypertension.