No abstract

Social science and public health literature has framed residential segregation as a potent structural determinant of the higher HIV burden among black heterosexuals, but empirical evidence has been limited. The purpose of this study is to test, for the first time, the association between racial segregation and newly diagnosed heterosexually acquired HIV cases among black adults and adolescents in 95 large US metropolitan statistical areas (MSAs) in 2008-2015. We operationalized racial segregation (the main exposure) using Massey and Denton's isolation index for black residents; the outcome was the rate of newly diagnosed HIV cases per 10,000 black adult heterosexuals. We tested the relationship of segregation to this outcome using multilevel multivariate models of longitudinal (2008-2015) MSA-level data, controlling for potential confounders and time. All covariates were lagged by 1 year and centered on baseline values. We preliminarily explored mediation of the focal relationship by inequalities in education, employment, and poverty rates. Segregation was positively associated with the outcome: a one standard deviation decrease in baseline isolation was associated with a 16.2% reduction in the rate of new HIV diagnoses; one standard deviation reduction in isolation over time was associated with 4.6% decrease in the outcome. Exploratory mediation analyses suggest that black/white socioeconomic inequality may mediate the relationship between segregation and HIV. Our study suggests that residential segregation may be a distal determinant of HIV among black heterosexuals. The findings further emphasize the need to address segregation as part of a comprehensive strategy to reduce racial inequities in HIV.

Amid increased attention to the cost of health care, health information technology, and specialization and fragmentation in medicine, the medical home has achieved recognition as a model for more effective and efficient health care. Little data are available on recently funded HIV medical home demonstration projects, and no research richly describes existing medical home characteristics, implementation challenges, and impact on outcomes in longstanding HIV outpatient settings. The Ryan White HIV/AIDS Program (RWP) provides federal funding for primary and specialty care for people living with HIV. Although RWP clinics developed independently of the medical home model, existing data indirectly support that, with emphasis on primary, comprehensive, and patient-centered care, RWP clinics operate as medical homes. This study explores the development, definition, and implementation of medical home characteristics by RWP-funded providers in order to better understand how it fits with broader debates about medical homes and health care reform.