Document Classification

Section Type: RESULTS

Text: For patients with ER-negative tumors, the addition of CMF statistically significantly improved DFS (5-year DFS = 84 % for CMF -- > tamoxifen versus 69 % for tamoxifen alone ; difference = 15 % ; 95 % confidence interval [CI] = 6 % to 24 % ; risk ratio [RR] = 0. 52 ; 95 % CI = 0. 34 to 0. 79 ; P =. 003) and OS (5-year OS = 89 % for CMF -- > tamoxifen versus 81 % for tamoxifen alone ; difference = 8 % ; 95 % CI = 0 % to 16 % ; RR = 0. 51 ; 95 % CI = 0. 30 to 0. 87 ; P =. 01).