NCT00005104.

Trial name or title	Randomised study of decreased hyperinsulinaemia on the ovulatory response to clomiphene citrate in women with polycystic ovary syndrome
Methods	Randomised, double‐blind, placebo‐controlled trial
Participants	Women with chronic anovulation to PCOS, whose treatment with CC failed
Interventions	Oral metformin vs oral placebo, with addition of CC if remain anovulatory after 49 days
Outcomes	Ovulation
Starting date	April 2000
Contact information	University of Virginia
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