Table 2.

Statistics of the occurrence of adverse reactions (n = 40).

Group	Bleeding in the vagina	Mild urinary system infection	Abortion	Premature delivery	Total adverse reaction rate
Observation group	1 (2.5%)	1 (2.5%)	0	0	2 (5.0%)
Control group	3 (7.5%)	2 (5.0%)	1 (2.5%)	1 (2.5%)	7 (17.5%)
X 2	1.094	0.358	1.024	2.093	4.601
P value	0.294	0.540	0.311	0.149	0.032