Participants
As shown in the flow chart (Figure
1), 78 out of the 82 eligible patients gave informed consent and were
included. Patients were divided into 2 groups according to their
treatment of choice, 40 patients received insertion of LNG-IUD and 38
patients underwent a hysteroscopic niche resection. In the LNG-IUD
group, 2 patients were excluded because of endometrial hyperplasia that
was diagnosed postoperatively, 2 patients removed the LNG-IUD because of
fertility desire, 36 patients finally completed the one-year follow-up
and were included in the ITT analyses. Among these 36 patients, 1
patient removed the LNG-IUD for pelvic pain in the 2ndmonth, 1 patient removed the LNG-IUD
for the partial expulsion in the 7th month. In the
hysteroscopy group, 2 patients received LNG-IUD because of persisting
bleeding symptoms in the 3.5th and
8th month respectively; 2 patients had an unintended
pregnancy in the 7th, 8th month
respectively, and then decided to continue the pregnancy; all 38
patients in the hysteroscopy group completed the one-year follow-up and
were included in the ITT analyses.