Diagnosed and Undiagnosed Diabetes Prevalence by County in the U.S., 1999–2012
Key result
County-level total diabetes prevalence in the U.S. in 2012 ranged from 8.8% to 26.4%, with diagnosed cases ranging from 59.1% to 79.8% and effective treatment ranging from 19.4% to 31.0%.
Population
U.S. population represented in NHANES and BRFSS surveys from 1999 to 2012
Design
Cross-sectional
Follow-up
1999 to 2012
Authors
Discussion
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Member takes
Implication
Geographic disparities in diabetes prevalence and care may inform local strategies; leaves open causal factors and intervention effects for prospective study.
Key Points
- To estimate county-level trends in the prevalence of diagnosed, undiagnosed, and total diabetes, as well as rates of diagnosis and effective treatment, across the United States from 1999 to 2012.
- Built predictive models of true diabetes status using self-reported and biomarker data from the National Health and Nutrition Examination Survey (NHANES).
- Imputed diabetes status for Behavioral Risk Factor Surveillance System (BRFSS) respondents and fitted small area models to generate county-level estimates across the U.S. from 1999 to 2012.
- In 2012, total diabetes prevalence ranged from 8.8% to 26.4% across counties, while the proportion of diagnosed cases ranged from 59.1% to 79.8% and successfully treated individuals ranged from 19.4% to 31.0%.
- Total diabetes prevalence and diagnosis rates increased across all counties between 1999 and 2012, though the rate of increase varied widely geographically.
- Effective treatment rates stagnated across U.S. counties over the same 13-year observation window.
Study Design
Type
Observational
Multicenter
Yes
Structured PICO
P
Population
U.S. population represented in NHANES and BRFSS surveys from 1999 to 2012
O
Outcome
County-level estimates of diagnosed, undiagnosed, and total diabetes prevalence, as well as rates of diabetes diagnosis and effective treatment
There are substantial geographic disparities in diabetes prevalence, diagnosis, and effective treatment across U.S. counties, highlighting the need for targeted public health strategies.
Cite This Study
Dwyer‐Lindgren et al. (2016) conducted an observational in Diabetes. County-level total diabetes prevalence in the U.S. in 2012 ranged from 8.8% to 26.4%, with diagnosed cases ranging from 59.1% to 79.8% and effective treatment ranging from 19.4% to 31.0%.