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Comparisons of individual- and area-level socioeconomic status as proxies for individual-level measures: evidence from the Mortality Disparities in American Communities study
Abstract
Background: Area-level measures are often used to approximate socioeconomic status (SES) when individual-level data are not available. However, no national studies have examined the validity of these measures in approximating individual-level SES. Methods: Data came from ~ 3,471,000 participants in the Mortality Disparities in American Communities study, which links data from 2008 American Community Survey to National Death Index (through 2015). We calculated correlations, specificity, sensitivity, and odds ratios to summarize the concordance between individual-, census tract-, and county-level SES indicators (e.g., household income, college degree, unemployment). We estimated the association between each SES measure and mortality to illustrate the implications of misclassification for estimates of the SES-mortality association. Results: Participants with high individual-level SES were more likely than other participants to live in high-SES areas. For example, individuals with high household incomes were more likely to live in census tracts ( r = 0.232; odds ratio [OR] = 2.284) or counties ( r = 0.157; OR = 1.325) whose median household income was above the US median. Across indicators, mortality was higher among low-SES groups (all p < .0001). Compared to county-level, census tract-level measures more closely approximated individual-level associations with mortality. Conclusions: Moderate agreement emerged among binary indicators of SES across individual, census tract, and county levels, with increased precision for census tract compared to county measures when approximating individual-level values. When area level measures were used as proxies for individual SES, the SES-mortality associations were systematically underestimated. Studies using area-level SES proxies should use caution when selecting, analyzing, and interpreting associations with health outcomes.
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“The measure of SES used will affect the extent of inequalities observed in preterm birth [63, 64], particularly when considering area-based and individual measures [65, 66].”
From Mediators of socioeconomic inequalities in preterm birth: a systematic review (2022) · cites this paper as [66]
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“different measures of SES are potentially not comparable”
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Cited by
Mediators of socioeconomic inequalities in preterm birth: a systematic review
McHale, P., Maudsley, G., Pennington, A., Schlüter, D. K., Barr, B., Paranjothy, S., & Taylor-Robinson, D. (2022) · BMC Public Health · doi:10.1186/s12889-022-13438-9 · Cited by 89
Pagán, V. M., McClung, K. S., & Peden, C. J. (2022) · Telemedicine and e-Health · doi:10.1089/tmj.2021.0412 · Cited by 28
Wang, L., Swayze, S., Bodner, K., Calzavara, A., Harrigan, S. P., Siddiqi, A., Baral, S. D., Austin, P. C., Smylie, J., Koh, M., et al. (2026) · American Journal of Epidemiology · doi:10.1093/aje/kwaf051 · Cited by 5
Metadata
- Authors
- Moss, J. L., Johnson, N. J., Yu, M., Altekruse, S. F., & Cronin, K. A.
- Venue
- Population Health Metrics
- Published
- 2021-01-07
- Volume
- 19
- Issue
- 1
- ISSN
- 1478-7954
- Cited by
- 165
- References
- 0
- Language
- en
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