Additional file 1: of Systemic therapy for breast cancer and risk of subsequent contralateral breast cancer in the WECARE Study

Table S1. Characteristics of patients diagnosed with ER/PR-positive first breast cancer enrolled in the WECARE I and II Study. Table S2. Risk ratios of contralateral breast cancer associated with different aspects of tamoxifen use among participants diagnosed with ER/PR positive first breast cancer in the WECARE I and II Study. Table S3. Risk ratios of ER-positive and ER-negative contralateral breast cancer associated with different aspects of tamoxifen use among participants diagnosed with ER/PR-positive first breast cancer in the WECARE I and II Study. Table S4. Risk ratios of contralateral breast cancer associated with tamoxifen use by patient and tumor characteristics among participants diagnosed with ER/PR positive first breast cancer in the WECARE I and II Study. (DOCX 59 kb