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Results from the National Health and Nutrition Examination Survey (NHANES) indicate that hypertension prevalence declined by 9% points from 34% in 1976-1980 to 25% in 1999-2002 in adults 20-74 years. The purpose of this study was to estimate the impact on hypertension prevalence of measurement error and selected risk factors.

The Impact of Differences in Methodology and Population Characteristics on the Prevalence of Hypertension in US Adults in 1976-1980 and 1999-2002