Contralateral breast cancer
tamoxifen.13
CONTRALATERAL BREAST CANCER, EVENTS
The incidence of contralateral breast cancer was reduced in the five-year group, HR 0.75 (95% CI 0.59–0.95, p = 0.029) as illustrated in Incidence of contralateral breast cancer. Events after 2 versus 5 years of tamoxifen treatment.CI = confidence interval; HR = hazard ratio; SHR = subhazard ratio; TAM = tamoxifen.13 patients in the treatment group of 2 years TAM and 9 patients in the treatment group of 5 years TAM were diagnosed with contralateral breast cancer before the randomization. These patients were excluded in this analysis.Incidence of contralateral breast cancer for patients randomized to two versus five years of tamoxifen.