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Diabetes Mellitus–Related All‐Cause and Cardiovascular Mortality in a National Cohort of Adults

Open access
Raghavan, Sridharan, Vassy, Jason L., Ho, Yuk‐Lam, Song, Rebecca J., Gagnon, David R., Cho, Kelly, Wilson, Peter W. F., Phillips, Lawrence S.·2019·Journal of the American Heart Association

Abstract

Background: Diabetes mellitus is a risk factor for cardiovascular disease ( CVD ) and has been associated with 2‐ to 4‐fold higher mortality. Diabetes mellitus–related mortality has not been reassessed in individuals receiving routine care in the United States in the contemporary era of CVD risk reduction. Methods and Results: We retrospectively studied 963 648 adults receiving care in the US Veterans Affairs Healthcare System from 2002 to 2014; mean follow‐up was 8 years. We estimated associations of diabetes mellitus status and hemoglobin A1c (HbA1c) with all‐cause and CVD mortality using covariate‐adjusted incidence rates and multivariable Cox proportional hazards regression. Of participants, 34% had diabetes mellitus. Compared with nondiabetic individuals, patients with diabetes mellitus had 7.0 (95% CI , 6.7–7.4) and 3.5 (95% CI, 3.3–3.7) deaths/1000‐person‐years higher all‐cause and CVD mortality, respectively. The age‐, sex‐, race‐, and ethnicity‐adjusted hazard ratio for diabetes mellitus–related mortality was 1.29 (95% CI, 1.28–1.31), and declined with adjustment for CVD risk factors (hazard ratio, 1.18 [95% CI, 1.16–1.19]) and glycemia (hazard ratio, 1.03 [95% CI, 1.02–1.05]). Among individuals with diabetes mellitus, CVD mortality increased as HbA1c exceeded 7% (hazard ratios, 1.11 [95% CI, 1.08–1.14], 1.25 [95% CI, 1.22–1.29], and 1.52 [95% CI, 1.48–1.56] for HbA1c 7%–7.9%, 8%–8.9%, and ≥9%, respectively, relative to HbA1c 6%–6.9%). HbA1c 6% to 6.9% was associated with the lowest mortality risk irrespective of CVD history or age. Conclusions: Diabetes mellitus remains significantly associated with all‐cause and CVD mortality, although diabetes mellitus–related excess mortality is lower in the contemporary era than previously. We observed a gradient of mortality risk with increasing HbA1c >6% to 6.9%, suggesting HbA1c remains an informative predictor of outcomes even if causality cannot be inferred.

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Metadata

Authors
Raghavan, S., Vassy, J. L., Ho, Y., Song, R. J., Gagnon, D. R., Cho, K., Wilson, P. W. F., & Phillips, L. S.
Venue
Journal of the American Heart Association
Published
2019-02-19
Volume
8
Issue
4
Pages
e011295-e011295
ISSN
2047-9980 (ISSN-L)
OpenAlex
W2916269741
Cited by
563
References
18
FWCI
33.38
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Diabetes Mellitus–Related All‐Cause and Cardiovascular Mortality in a National Cohort of Adults. https://app.cochat.ai/papers/10.1161/jaha.118.011295
The paper
Raghavan, S., Vassy, J. L., Ho, Y., Song, R. J., Gagnon, D. R., Cho, K., Wilson, P. W. F., & Phillips, L. S. (2019). Diabetes Mellitus–Related All‐Cause and Cardiovascular Mortality in a National Cohort of Adults. Journal of the American Heart Association. https://doi.org/10.1161/jaha.118.011295

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