RESULTS	Patients with ER-negative tumors achieved better disease-free survival if they received CMF ( 5-year DFS for CMF = 84 % , 95 % confidence interval [ CI ] = 77 % to 91 % ; 5-year DFS for CMF -- > goserelin = 88 % , 95 % CI = 82 % to 94 % ) than if they received goserelin alone ( 5-year DFS = 73 % , 95 % CI = 64 % to 81 % ) .\