Key result
Diabetes or impaired fasting glucose affects ~14% of U.S. adults, with substantial undiagnosed disease.
Why the study?
Previous national surveys documented increases in diabetes prevalence but relied on self-reports and could not measure undiagnosed diabetes, limiting understanding of true prevalence changes.
Population
U.S. adults aged ≥20 years from NHANES 1999-2000 and NHANES III (1988-1994)
Comparison
Diagnosed diabetes, undiagnosed diabetes, and impaired fasting glucose prevalence
Design
Nationally representative cross-sectional surveys
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Rising diabetes prevalence in US adults underscores screening gaps; leaves open whether recent detection gains have plateaued.
Cross-Sectional
Yes
A 2003 study conducted a cross-sectional in Diabetes and impaired fasting glucose. Survey year was evaluated on Prevalence of diagnosed diabetes, undiagnosed diabetes, or impaired fasting glucose. An estimated 14.4% of U.S. adults aged ≥20 years had diagnosed diabetes, undiagnosed diabetes, or impaired fasting glucose during 1999-2000, with 29% of diabetes cases being undiagnosed.
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