METHOD : In a 16-week multicenter , double-blind trial , 122 children with ADHD were randomly assigned to clonidine ( n = 31 ) , methylphenidate ( n = 29 ) , clonidine and methylphenidate ( n = 32 ) , or placebo ( n = 30 ) .
O O O O O O O O O O O O O B-DiseaseOrPhenotypicFeature O O O O B-ChemicalEntity O O O O O O B-ChemicalEntity O O O O O O B-ChemicalEntity O B-ChemicalEntity O O O O O O O O O O O O O O