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Published in: Journal of General Internal Medicine 10/2010

01-10-2010 | Original Research

Racial Disparities in All-Cause Mortality Among Veterans with Type 2 Diabetes

Authors: Cheryl P. Lynch, MD, MPH, Mulugeta Gebregziabher, PhD, Carrae Echols, MS, Gregory E. Gilbert, MSPH, Yumin Zhao, MS, Leonard E. Egede, MD, MS

Published in: Journal of General Internal Medicine | Issue 10/2010

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Abstract

BACKGROUND

Racial differences in mortality among veterans with diabetes are less well characterized than those in the general population.

OBJECTIVE

To examine racial differences in all-cause mortality in a large sample of veterans with diabetes.

DESIGN

A retrospective cohort.

PARTICIPANTS

Participants comprised 8,812 veterans with type 2 diabetes.

MEASUREMENTS

The main outcome measure was time to death. The main predictor was race/ethnicity. Other risk factors (or covariates) included age, gender, marital status, employment, glycosylated hemoglobin (HgbA1c), and several ICD-9 coded physical and mental health comorbidities.

RESULTS

Average follow-up was 4.5 years; 64% of veterans were non-Hispanic whites (NHW), 97% male, and 84% at least 50 years old. The overall mortality rate was 15% and was significantly lower for non-Hispanic blacks (NHB). Baseline HgbA1c values also differed for NHW (mean = 7.05) and NHB (mean = 7.65) (p < 0.001). In sequentially-built models NHB race was associated with a lower risk of mortality with HR ranging 0.80-0.92. After adjusting for all significant covariates, the risk of mortality remained lower for NHB (HR = 0.84, 95% CI: 0.75, 0.94). Increased mortality risk was associated with age, not being employed or retired, poor glycemic control, cancer, Coronary Heart Disease (CHD), and anxiety disorder; while a lower risk was associated with being female and ever being married.

CONCLUSIONS

The risk of death among NHB veterans with diabetes remained significantly lower than that of NHW after controlling for important confounding variables. Future studies in the VA need to examine detailed contributions of patient, provider and system-level factors on racial differences in mortality in adults with diabetes, especially if the findings of this study are replicated at other sites or using national VA data.
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Metadata
Title
Racial Disparities in All-Cause Mortality Among Veterans with Type 2 Diabetes
Authors
Cheryl P. Lynch, MD, MPH
Mulugeta Gebregziabher, PhD
Carrae Echols, MS
Gregory E. Gilbert, MSPH
Yumin Zhao, MS
Leonard E. Egede, MD, MS
Publication date
01-10-2010
Publisher
Springer-Verlag
Published in
Journal of General Internal Medicine / Issue 10/2010
Print ISSN: 0884-8734
Electronic ISSN: 1525-1497
DOI
https://doi.org/10.1007/s11606-010-1405-y

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