We commend Primm and colleagues for performing an analysis of ethnoracial disparities in outcomes in women with early-stage breast cancer (1). As the authors note, aggregating race/ethnicity into broad categories may mask important differences between different ethnoracial subgroups. This study was more comprehensive than prior studies in that individuals who identified as Pacific Islander had their own category. In addition, the authors disaggregated those identifying as Asian into four distinct subgroups.

With respect to ethnicity, the Hispanic population is an extremely diverse ethnoracial group that represents the fastest growing demographic in the United States. Therefore, while we completely agree with Primm and colleagues about the disaggregation of Asian people we would argue those of Hispanic ethnicity also warrant the same level of ethnoracial granularity. Studies in patients with breast cancer have demonstrated that disaggregating Hispanic ethnicity by race captures ethnoracial (Hispanic White, Hispanic Black, etc.) differences in stage,...

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