2. General condition of the patients
After MWA, there were 45 cases in the pregnant group and 36 cases in the non-pregnant group. Compared with the non-pregnant group, the pregnant group was younger (34.89±4.62 years vs. 38.14±5.39 years, P <0.05), more history of gestation (30% vs. 15%, P <0.05), more spontaneous abortion history (12% vs. 2%, P <0.05) and poorer infertility history (4% vs. 14%, P <0.05). The other clinical baseline characteristics were no significant differences (P>0.05) (shown in Table 1).