期刊
HEALTH SERVICES RESEARCH
卷 50, 期 2, 页码 398-417出版社
WILEY
DOI: 10.1111/1475-6773.12229
关键词
Socioeconomic status; delivery of health care; quality of health care; health care disparities; geographic mapping
资金
- Institutional National Research Service Award [T32HP10251]
- Ryoichi Sasakawa Fellowship Fund
- Division of General Internal Medicine at Massachusetts General Hospital
- Johnson Johnson
ObjectiveTo determine which area-based socioeconomic status (SES) indicator is best suited to monitor health care disparities from a delivery system perspective. Data Sources/Study Setting142,659 adults seen in a primary care network from January 1, 2009 to December 31, 2011. Study DesignCross-sectional, comparing associations between area-based SES indicators and patient outcomes. Data CollectionAddress data were geocoded to construct area-based SES indicators at block group (BG), census tract (CT), and ZIP code (ZIP) levels. Data on health outcomes were abstracted from electronic records. Relative indices of inequality (RIIs) were calculated to quantify disparities detected by area-based SES indicators and compared to RIIs from self-reported educational attainment. Principal FindingsZIP indicators had less missing data than BG or CT indicators (p<.0001). Area-based SES indicators were strongly associated with self-report educational attainment (p<.0001). ZIP, BG, and CT indicators all detected expected SES gradients in health outcomes similarly. Single-item, cut point defined indicators performed as well as multidimensional indices and quantile indicators. ConclusionsArea-based SES indicators detected health outcome differences well and may be useful for monitoring disparities within health care systems. Our preferred indicator was ZIP-level median household income or percent poverty, using cut points.
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