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AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 2 of 2 Research Studies DisplayedEneanya ND, Adingwupu OM, Kostelanetz S
Social determinants of health and their impact on the Black race coefficient in serum creatinine-based estimation of GFR: secondary analysis of MDRD and CRIC studies.
The rationale behind the disparity in blood creatinine levels between Black and non-Black individuals factored into previous GFR prediction formulas remains unclear. The purpose of this study was to investigate if social health determinants could explain this gap. The researchers conducted a secondary examination of the initial data from the Modification of Diet in Renal Disease and Chronic Renal Insufficiency Cohort investigations. Data from these cohorts were divided based on racial characteristics (Black versus non-Black). The study initially assessed the degree to which the Black race coefficient in the GFR estimation from creatinine is influenced by the interrelation of race with social health determinants and non-GFR creatinine determinants. Researchers then assessed whether the discrepancy in adjusted mean creatinine between racial groups could be attributed to social health determinants and non-GFR creatinine determinants. The study found that in models that associated measured GFR with creatinine, age, sex, and race, the Black race coefficient was 21% in the Modification of Diet in Renal Disease study and 13% in the Chronic Renal Insufficiency Cohort, and was not weakened by the inclusion of social health determinants, either singularly or in combination. In both studies, the Black race coefficient was more pronounced at lower income levels as compared to higher ones. In models associating creatinine with measured GFR, age, and sex, average creatinine was elevated in Black participants in comparison with non-Black participants in both studies, with social health determinants having no impact.
AHRQ-funded; HS026122.
Citation: Eneanya ND, Adingwupu OM, Kostelanetz S .
Social determinants of health and their impact on the Black race coefficient in serum creatinine-based estimation of GFR: secondary analysis of MDRD and CRIC studies.
Clin J Am Soc Nephrol 2023 Apr; 18(4):446-54. doi: 10.2215/cjn.0000000000000109..
Keywords: Social Determinants of Health, Racial and Ethnic Minorities, Kidney Disease and Health, Disparities
Kim D, Lee Y, Thorsness R
Racial and ethnic disparities in excess deaths among persons with kidney failure during the COVID-19 pandemic, March-July 2020.
This national study estimated excess deaths for the kidney failure population by race and ethnicity from March 1 through August 1, 2020. Findings showed that, among the US kidney failure population, the number of excess deaths was 16% higher than expected, similar to reports for the general population. However, results showed that the relative increase in deaths among Black and Hispanic patients was more than 4-fold higher than that observed among White patients. The magnitude of these disparities was larger than corresponding relative ratios reported among COVID-19–associated deaths in the general population.
AHRQ-funded; HS028285.
Citation: Kim D, Lee Y, Thorsness R .
Racial and ethnic disparities in excess deaths among persons with kidney failure during the COVID-19 pandemic, March-July 2020.
Am J Kidney Dis 2021 May;77(5):827-29. doi: 10.1053/j.ajkd.2021.02.003..
Keywords: COVID-19, Racial and Ethnic Minorities, Disparities, Mortality, Kidney Disease and Health, Chronic Conditions, Social Determinants of Health