Nygaard 1977

Methods	Random allocation to two groups. Blinding could not be maintained after allocation, however no details are given about how allocation concealment was done.
Participants	119 Women attending general practices in Copenhagen, Denmark, who required a gynaecological examination were recruited. Pregnancy, presumed promiscuity, and systemic disorders were reasons for exclusion.
Interventions	Metronidazole 200 mg 3 times daily for 7 days versus ornidazole 500 mg 4 tablets by mouth as single dose. Partner treatments were given to the women to take to their partners.
Outcomes	Parasitological and clinical cure. Side effects.
Notes	Diagnosis by wetmount and culture. Only those verified by culture results were analysed. Excluded wetmount positive culture negatives (10/53 in the metronidazole and 12/66 in the ornidazole groups). Only 1 woman in the ornidazole group was lost to follow up at 1 week, 8 in the ornidazole, and 3 in the metronidazole group were lost at 5 weeks.