IRCT20190409043212N1.

Study name	Effect of endometrial scratching on intrauterine insemination outcome in infertile couples in controlled ovarian stimulation cycles
Methods	Randomised controlled trial
Participants	Inclusion criteria: Women 18 to 42 years old Normal uterine cavity with no endometrial polyp or lesion Body mass index (BMI) < 35 kg/m² Exclusion criteria: Any maternal underlying disease
Interventions	Intervention group: endometrial scratching 48 hours before intrauterine insemination (IUI) Control group: IUI without endometrial scratching
Outcomes	Clinical pregnancy
Starting date	Expected start date June 2019; actual start date: unknown
Contact information	Sedighe Amooee; amooee@sums.ac.ir Sara Davoodi; saradavoodi9798@gmail.com
Notes	IRCT20190409043212N1 Author correspondence was undertaken to check whether the trial was still ongoing, but we did not receive a response