Supplementary Data. Supplementary Table 1: Characteristics of Female Patients with Triple Negative Breast Cancer by Race/ethnicity. Supplementary Table 2: HRs (95%CI) for 5-year Mortality Associated with Race/ethnicity by Stage Among Female Patients with TNBC. Supplementary Table 3: HRs (95%CI) for 5-year Mortality Associated with Race/ethnicity Among Female Patients with TNBC Stratified by Age Groups. Supplementary Table 4: HRs (95%CI) for 3-year Mortality Associated with Race/ethnicity by Types and Regions of Facility Among Female Patients with TNBC. Supplementary Figure 1: Flow chart of the study.