IRCT20120918010876N5.

Study name	Evaluation of the effect of oral dydrogesterone (Duphaston) in threatened abortion at first trimester
Methods	2‐arm no treatment‐controlled randomised trial.
Participants	Pregnant women aged between 18 and 35 years in the first trimester, presenting with symptoms and signs of threatened abortion. Women will have a singleton pregnancy and a viable fetus will be identified by ultrasound.
Interventions	40 mg dydrogesterone followed by 10 mg every 8 hours until bleeding was discontinued versus no treatment
Outcomes	Abortion; vaginal bleeding;
Starting date	21‐Nov‐2017
Contact information	drmoradi000@yahoo.com
Notes