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Population Health Metrics
Published in: Population Health Metrics 1/2009

Open Access 01-12-2009 | Research

Diabetes prevalence and diagnosis in US states: analysis of health surveys

Authors: Goodarz Danaei, Ari B Friedman, Shefali Oza, Christopher JL Murray, Majid Ezzati

Published in: Population Health Metrics | Issue 1/2009

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Abstract

Background

Current US surveillance data provide estimates of diabetes using laboratory tests at the national level as well as self-reported data at the state level. Self-reported diabetes prevalence may be biased because respondents may not be aware of their risk status. Our objective was to estimate the prevalence of diagnosed and undiagnosed diabetes by state.

Methods

We estimated undiagnosed diabetes prevalence as a function of a set of health system and sociodemographic variables using a logistic regression in the National Health and Nutrition Examination Survey (2003-2006). We applied this relationship to identical variables from the Behavioral Risk Factor Surveillance System (2003-2007) to estimate state-level prevalence of undiagnosed diabetes by age group and sex. We assumed that those who report being diagnosed with diabetes in both surveys are truly diabetic.

Results

The prevalence of diabetes in the U.S. was 13.7% among men and 11.7% among women ≥ 30 years. Age-standardized diabetes prevalence was highest in Mississippi, West Virginia, Louisiana, Texas, South Carolina, Alabama, and Georgia (15.8 to 16.6% for men and 12.4 to 14.8% for women). Vermont, Minnesota, Montana, and Colorado had the lowest prevalence (11.0 to 12.2% for men and 7.3 to 8.4% for women). Men in all states had higher diabetes prevalence than women. The absolute prevalence of undiagnosed diabetes, as a percent of total population, was highest in New Mexico, Texas, Florida, and California (3.5 to 3.7 percentage points) and lowest in Montana, Oklahoma, Oregon, Alaska, Vermont, Utah, Washington, and Hawaii (2.1 to 3 percentage points). Among those with no established diabetes diagnosis, being obese, being Hispanic, not having insurance and being ≥ 60 years old were significantly associated with a higher risk of having undiagnosed diabetes.

Conclusion

Diabetes prevalence is highest in the Southern and Appalachian states and lowest in the Midwest and the Northeast. Better diabetes diagnosis is needed in a number of states.
Appendix
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Metadata
Title
Diabetes prevalence and diagnosis in US states: analysis of health surveys
Authors
Goodarz Danaei
Ari B Friedman
Shefali Oza
Christopher JL Murray
Majid Ezzati
Publication date
01-12-2009
Publisher
BioMed Central
Published in
Population Health Metrics / Issue 1/2009
Electronic ISSN: 1478-7954
DOI
https://doi.org/10.1186/1478-7954-7-16

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