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Hypertension Prevalence Among Adults Aged 18 and Over: United States, 2017-2018

Yechiam Ostchega, Cheryl D Fryar, Tatiana Nwankwo

    NCHS Data Brief
    |June 4, 2020
    PubMed

    Insights

    New hypertension guidelines in 2017-2018 redefined high blood pressure, increasing prevalence estimates. Lowering the threshold to 130/80 mmHg means more Americans now have hypertension, a key cardiovascular disease risk factor.

    Area of Science:

    • Cardiology
    • Public Health
    • Epidemiology

    Background:

    • Hypertension is a significant risk factor for cardiovascular diseases, including stroke, heart attack, and heart failure.
    • Previous hypertension definitions used a threshold of 140/90 mmHg.
    • Lowering blood pressure effectively reduces cardiovascular event incidence.

    Purpose of the Study:

    • To estimate U.S. hypertension prevalence using the 2017 American College of Cardiology/American Heart Association guidelines.
    • To assess the impact of redefined hypertension thresholds on prevalence estimates.

    Main Methods:

    • Utilized 2017-2018 U.S. data.
    • Applied the 2017 American College of Cardiology and American Heart Association hypertension definition.
    • Incorporated the new guideline threshold of 130/80 mmHg.

    Main Results:

    • The updated definition, lowering the threshold to 130/80 mmHg, resulted in higher hypertension prevalence estimates.
    • A greater percentage of the U.S. population is now categorized as having hypertension.

    Conclusions:

    • The 2017 hypertension guidelines have significantly increased the number of individuals classified with hypertension.
    • This reclassification highlights the widespread nature of hypertension and the need for blood pressure management.

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