Document Classification

Section Type: RESULTS

Text: The rate of disease-free survival was 72. 1 % in the nodal-irradiation group and 69. 1 % in the control group (hazard ratio for disease progression or death, 0. 89 ; 95 % CI, 0. 80 to 1. 00 ; P = 0. 04), the rate of distant disease-free survival was 78. 0 % versus 75. 0 % (hazard ratio, 0. 86 ; 95 % CI, 0. 76 to 0. 98 ; P = 0. 02), and breast-cancer mortality was 12. 5 % versus 14. 4 % (hazard ratio, 0. 82 ; 95 % CI, 0. 70 to 0. 97 ; P = 0. 02).