RESULTS	By contrast , for patients with ER-positive disease , chemotherapy alone and goserelin alone provided similar outcomes ( 5-year DFS for both treatment groups = 81 % , 95 % CI = 76 % to 87 % ) , whereas sequential therapy ( 5-year DFS = 86 % , 95 % CI = 82 % to 91 % ) provided a statistically nonsignificant improvement compared with either modality alone , primarily because of the results among younger women .\