Cited by 315Health disparities and outcomesHealth Promotion and Cardiovascular PreventionDiabetes, Cardiovascular Risks, and Lipoproteins

Differences in control of cardiovascular disease and diabetes by race, ethnicity, and education: U.S. trends from 1999 to 2006 and effects of medicare coverage

McWilliams, J. Michael, Meara, Ellen, Zaslavsky, Alan M., Ayanian, John Z.·2009·Annals of Internal Medicine

Abstract

BACKGROUND: Efforts to improve the care of cardiovascular disease and diabetes or expand insurance coverage for adults with these conditions may reduce differences in clinical outcomes. OBJECTIVE: To assess recent national trends in disease control, trends in sociodemographic differences in control, and changes in sociodemographic differences after age 65 years associated with near-universal Medicare coverage. DESIGN: Observational and quasi-experimental analyses of repeated cross-sectional data. SETTING: National Health and Nutrition Examination Survey, 1999 to 2006. PARTICIPANTS: Adults age 40 to 85 years with relevant clinical conditions. MEASUREMENTS: Blood pressure control (<140/90 mm Hg) and mean systolic blood pressure among adults with hypertension (n = 4521); glycemic control (hemoglobin A(1c) levels <7.0%) and mean hemoglobin A(1c) levels among those with diabetes (n = 1733); and total cholesterol level control (<5.2 mmol/L [<200 mg/dL]) and mean total cholesterol levels among those with coronary heart disease, stroke, or diabetes (n = 2928). Temporal trends in these measures were compared by race, ethnicity, and education, and sociodemographic differences were compared above and below eligibility for Medicare at age 65 years. RESULTS: Disease control improved significantly between 1999 and 2006 for all 6 measures (P < 0.001). These trends did not differ by race or ethnicity or by education (P > or = 0.185 for group-time interactions), except that white-Hispanic differences in glycemic control widened (P = 0.042). Black-white differences in systolic blood pressure were smaller among adults age 65 to 85 years than among adults age 40 to 64 years (reduction in difference, 4.2 mm Hg; P = 0.009). Black-white differences in hemoglobin A(1c) levels were also smaller after age 65 years (reduction in difference, 0.7%; P = 0.005), as were Hispanic-white differences (reduction in difference, 0.7%; P = 0.007) and differences between less and more educated adults (reduction in difference, 0.5%; P = 0.033). LIMITATION: Data were cross-sectional, and estimates may have been biased by coincidental events at age 65 years, such as retirement, that may affect disease control. CONCLUSION: Control of blood pressure and glucose and cholesterol levels has improved since 1999 for adults with cardiovascular disease and diabetes, but racial, ethnic, or socioeconomic differences have not narrowed significantly. Medicare coverage after age 65 years is associated with reductions in these differences. PRIMARY FUNDING SOURCE: The Commonwealth Fund.

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Crossref · 10.7326/0003-4819-150-8-200904210-00005

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Authors
McWilliams, J. M., Meara, E., Zaslavsky, A. M., & Ayanian, J. Z.
Affiliations
Brigham and Women's Hospital (US)
Corresponding author
McWilliams, J. Michael
Venue
Annals of Internal Medicine
Published
2009-04-21
Volume
150
Issue
8
Pages
505-515
ISSN
  • 0003-4819 (ISSN-L)
  • 1539-3704
OpenAlex
W2118021989
Cited by
315
References
77
Citations by year
2026: 3 · 2025: 1 · 2024: 7 · 2023: 5 · 2022: 10 · 2021: 17 · 2020: 15 · 2019: 11 · 2018: 11 · 2017: 13 · 2016: 20 · 2015: 19 · 2014: 32 · 2013: 16 · 2012: 35
FWCI
46.08
Type
journal article
Language
en
Open access
closed
Locations
  • Annals of Internal Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Health › Health disparities and outcomes
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Health Promotion and Cardiovascular Prevention
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
cardiovascular disease control, diabetes management, racial and ethnic disparities, socioeconomic disparities, Medicare coverage, hypertension, blood pressure control, glycemic control, HbA1c, total cholesterol, coronary artery disease, stroke, temporal trends, older adults, black-white disparities, Hispanic-white disparities, educational inequality, health insurance coverage, NHANES
MeSH terms
Adult, Aged, Aged, 80 and over, Blood Pressure, Cardiovascular Diseases, Cross-Sectional Studies, Diabetes Mellitus, Educational Status, Female, Medicare, Hispanic or Latino, Humans, Male, Middle Aged, Socioeconomic Factors, United States, Insurance Coverage, White People, Healthcare Disparities

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