Figure S1. Intraoperative images of niche characteristics during hysteroscopic correction surgery.
Cyst-like formations B. polyp-like structures C. lateral branch D. abnormal blood vessels
Figure S2. Bleeding/spotting Diary
Patients completed a menstrual diary to record the intensity of bleeding/spotting based on her subjective impression of the heaviest flow for that day.
●vaginal bleeding/spotting; 1-5: amount of bleeding;
1: spotting, 2: light flow bleeding; 3-4:normal flow bleeding; 5: heavy flow bleeding.
Figure S3. Measurement procedure of niche in MRI images.
W: width L: length D: depth TRM: thickness of residual myometrium
Figure S4. efficacy change
S4-A. The effective rate of postmenstrual spotting based on intention to treat analyses within 1 year;
S4-B. The effective rate of postmenstrual spotting based on per protocol analyses within 1 year;
LNG-IUD = Levonorgestrel - releasing intrauterine device;
P for trend was calculated by the Linear-by-linear association test;
The shorten time of spotting days > 2 days was defined as effective case;
Effective case was defined as patient with reduction of spotting >2 days;
Effective rate = number of effective cases / number of follow-up cases at each follow-up point.
Table S1. Comparison of improvement of abnormal uterine bleeding based on per protocol analyses
Table S2. Complications between LNG-IUD and hysterocopy group within 1 year