Validating 8 Area-Based Measures of Social Risk for Predicting Health and Mortality
Aubrey Limburg, David H. Rehkopf, Nicole Gladish, Robert L. Phillips, Victoria UdalovaImportance
Area-based measures of social risk are increasingly being used in policy applications in the US. While several have been demonstrated to be predictive of health and mortality in the general population, there is a need to identify area-based measures that are most reliable for policy applications, including measures that are associated with health and mortality consistently across subpopulations.
Objective
To compare the relative strength with which area and individual social risk measures are correlated with health outcomes and mortality, and the extent to which these associations are consistent across race, ethnicity, rurality, age, and gender.
Design, Setting, and Participants
This cross-sectional study included a sample of patients from primary care clinics across all 50 states that are part of the PRIME registry using electronic health records (2019-2021) linked to US Census Bureau restricted-use data at the individual level from 947 US primary care practices.
Exposures
Eight commonly used area based measures of social risk were examined: (1) Social Deprivation Index, (2) Social Vulnerability Index, (3) Area Deprivation Index (from University of Wisconsin), (4) Area Deprivation Index (constructed using Gophal Singh’s original design), (5) Neighborhood Stress Score, (6) Index of Concentration at the Extremes for race and income, (7) French Index of Social Deprivation, and (8) the Community Resilience Estimates. Individual socioeconomic measures of education, poverty, and occupation were also examined.
Main Outcomes and Measures
Hypertension, diabetes, and chronic kidney disease derived from electronic health records, and mortality from the Census Numident.
Results
Data from 2 801 000 patients were analyzed. Among these, 44% were male individuals and 56% were female individuals; 20% were younger than 25 years, 23% were aged 25 to 44 years, 30% were aged 45 to 64 years, and 27% were aged 65 years and older; 0.5% were American Indian or Alaskan Native, 2.1% Asian, 7.6% Black, 0.2% Native Hawaiian and Pacific Islander, 0.03% were 2 or more races, and 70% were White. Area-based measures of social risk were generally better predictors of hypertension, diabetes, and chronic kidney disease, whereas individual socioeconomic measures were generally better predictors of mortality. The strongest predictor across health outcomes was the Area Deprivation Index, and that Gopal Singh’s version was the most equitably predictive across rural areas and across all racial and ethnic subgroups.
Conclusions and Relevance
In this cross-sectional study, area-based measures predicted health outcomes better than individual socioeconomic measures, and generally predicted health equitably across subpopulations; thus, their use should be considered in conjunction or instead of using individual-level measures for selected health policy applications.