Sociocultural determinants of health and wealth in historic African Americans

Abstract

In this study, we examine the impacts of individual ancestry and socioeconomic status (SES) on health in historic African Americans through bioarchaeological means. We estimate ancestry from dental morphology and SES from the costs of coffin hardware. We include 188 adult individuals from Freedman's Cemetery in Dallas, Texas, and 2,301 individuals of African and European descent for comparison. Freedman's Cemetery functioned as the only cemetery available to freed people and their descendants between 1869 and 1907. Linear discriminant analysis (LDA) of dental morphological traits was used to estimate individual ancestry. LDA results were then used in Cox proportional hazards analysis to examine whether ancestry impacted mortality risk or SES. Ancestry was not found to impact SES. However, paralleling results from analysis of census mortality data, individuals with greater African ancestry on average have shorter lifespans and higher mortality hazards than individuals who have more European ancestry. This finding provides evidence for structural violence in this historic African American skeletal sample. The negative effects of social constructs are embodied and can be detected in skeletal samples through use of statistical methods combined with information about the cultural context in which people lived.

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