Self-Measured Waist Circumference Often Falls Short

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Self-Measured Waist Circumference Often Falls Short
Self-Measured Waist Circumference Often Falls Short

THURSDAY, May 19, 2016 (HealthDay News) -- Self-measured waist circumference has a clinically important false-negative rate compared with professionally-measured waist circumference, according to a study published in the May/June issue of the Annals of Family Medicine.

Barbara G. Carranza Leon, M.D., from the Mayo Clinic in Rochester, Minn., and colleagues investigated whether self-measured waist circumference is sufficiently accurate to replace professionally-measured waist circumference. Waist circumference was self-measured at the same visit during which a professionally-measured waist circumference was obtained among 585 women and 165 men.

The researchers observed no significant difference in self- and professionally-measured waist circumference but there was a clinically important false-negative rate for the self-measurements. Based on professionally-measured waist circumference, 11 and 52 percent of normal weight and overweight women, respectively, were in a high-risk category for metabolic syndrome; 57 and 18 percent of these women, respectively, undermeasured their own waist circumference and fell below the cut-off. Among men, 15 and 84 percent of overweight and class I obese, respectively, had a professionally-measured waist circumference putting them in the high-risk category; 23 and 16 percent, respectively, undermeasured their waist circumference.

"Despite standardized pictorial instructions for self-measured waist circumference, the false-negative rate of self-measurements approached or exceeded 20 percent for some groups at high risk for poor health outcomes," the authors write.

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