At 2 weeks , 5 % of children treated with antibiotic-glucocorticoid eardrops had otorrhea , as compared with 44 % of those treated with oral antibiotics ( risk difference , -39 percentage points ; 95 % confidence interval [ CI ] , -51 to -26 ) and 55 % of those treated with initial observation ( risk difference , -49 percentage points ; 95 % CI , -62 to -37 ) .