[Retracted] Evaluation of the Efficacy and Adverse Reactions of Mirena Combined with Hysteroscopic Surgery When Treating AUB: Based on a Retrospective Cohort Study

Table 4

Comparison of endometrial and menstrual changes between the two groups [].

Group		Endometrial thickness (mm)		Menstrual time (d)		Menstrual volume (ml)
		Before treatment	After treatment	Before treatment	After treatment	Before treatment	After treatment
C group	54
R group	54
		0.902	10.954	0.692	15.723	0.380	28.643
		>0.05	<0.01	>0.05	<0.01	>0.05	<0.01

Note: comparison of control group before and after treatment, ; comparison of the study group before and after treatment, .