a Comparison between three groups;
b Comparison between MA group and LNG-IUS group.
c Comparison between MA group and MA+LNG-IUS group.
d Comparison between LNG-IUS group and MA+LNG-IUS group.
P-value<0.05 was the significant threshold in analysis.
Abbreviation: CR, complete response; MA, megestrol acetate; LNG-IUS, levonorgestrel-releasing intrauterine system; OR, odds ratio; HR, hazard ratio; 95%CI, 95% confidence interval.