Reported complications or side effects
There were no complications or side effects reported in the hysteroscopic niche resection group (0 out of 38 (0.0%)) while 5 out of 36 (13.9%) were reported in the LNG-IUD group, see table S2, p=0.103). There was no bladder injury, fever, urinary tract infection nor where there any signs of acne or depression reported in both groups. In the hysteroscopic niche resection group no side effects were reported. In the LNG-IUD group 2 patients reported weight gain of more than 5 kilograms and breast distended pain, in 2 patients partial IUD expulsion was reported and in 1 patient the LNG-IUD was removed because of pelvic pain.
In the hysteroscopy group, 2 patients received additional treatment (LNG-IUD insertion) because of persisting postmenstrual spotting without improvement. While in the LNG-IUD group, as reported above the LNG IUD was removed in 2 patients because of side-effects.
The mean direct medical costs were 5650[5428,5923] CNY in the hysteroscopy group and 1683[1653,1763] CNY in the LNG-IUD group, p<0.001). This in correspond with 817[785,856] $ and 243[239,255] $ respectively.