The Joint National Committee on Prevention, Detection, and Treatment of High BP recommends that an appropriate cuff size be used to ensure accurate BP readings.
4, 5, 6, 7, 8 A cuff bladder width that is too narrow for the mid-arm circumference (AC) will overestimate BP, resulting in ‘cuff hypertension,’ whereas a bladder width that is too wide for the AC will result in falsely low BP readings. 2, 3 An inappropriate choice of cuff size for the upper arm frequently leads to inaccurate BP values. 1 Several factors affect BP measurement variability and accuracy. In 1999–2000, approximately 28.7% of the US population, or 58.4 million Americans, had hypertension. High blood pressure (BP), or hypertension, defined as average systolic BP equal to or greater than 140 mmHg or diastolic BP equal to or greater than 90 mmHg, is a major public health problem in the United States. Clinicians can refer to our prediction equations and reference tables to determine mid-AC and proper BP cuff sizes. Based on these equations, tables were created to predict mid-AC using self-reported height and weight. An all-possible regressions procedure by gender was used to derive the mid-AC prediction equations. Self-reported weight, height, and age data from NHANES III were used for model building, and similar data from NHANES 1999–2000 were used for validation. The analytic sample consisted of 4801 men and 4854 women in NHANES III and 1960 men and 2180 women from NHANES 1999–2000. Both surveys used a complex sample design to obtain nationally representative data for the US civilian noninstitutionalized population. The purpose of this study was to develop practical prediction equations for estimating adult mid-arm circumference (AC) using self-reported height and weight data from NHANES III 1988–1994 and NHANES 1999–2000.
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