Among the subjects treated with methadone , 28 % men and 32 % women had prolonged QTc interval .
O O O O O B-ChemicalEntity O O O B-OrganismTaxon O O O B-OrganismTaxon O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O