Is Body Mass Index a Measure of Adiposity in Elderly Women?

Overview

Journal Obes Res

Specialties Endocrinology
Nutritional Sciences
Physiology

Date 2001 May 11

PMID 11346663

Citations 17

Authors

G Bedogni

A Pietrobelli

S B Heymsfield

A Borghi

A M Manzieri

P MORINI

N Battistini

G SALVIOLI

Affiliations

Soon will be listed here.

Abstract

Objective: To evaluate the accuracy of body mass index (BMI) as a predictor of body fat in elderly women.

Research Methods And Procedures: A total of 1423 women aged 67 +/- 5 (mean +/- SD, range: 60 to 88) years were consecutively enrolled into the study. Fat mass (FM) was measured using DXA.

Results: BMI explained 72.9% of FM variance (p < 0.0001), with a root mean square error of estimate (RMSE) of 3.5 kg. After standardization of RMSE on the dependent variable as RMSE%, the prediction error equaled 15%. BMI explained 54.8% of FM% variance (p < 0.0001), with an RMSE of 4.1%, corresponding to an RMSE% of 11%.

Discussion: The relatively high RMSE% of the FM and FM%-BMI associations caution against the use of BMI as an adiposity index in individual elderly women. However, an error corresponding to 11% of FM% may be accepted for population studies of body fat in elderly women.

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