Evaluation of the body adiposity index in a Caucasian population: the Hordaland health study

Am J Epidemiol. 2013 Mar 15;177(6):586-92. doi: 10.1093/aje/kws271. Epub 2013 Feb 26.

Abstract

In this study, we compared the relationships of body mass index (BMI) and body adiposity index (BAI) with body fat percentage (BF%) in a Caucasian, European population. BF% was measured by dual-energy x-ray absorptiometry in a population-based cross-sectional study of 5,193 middle-aged (47-49 years) and elderly (71-74 years) men and women from the Hordaland Health Study in western Norway from 1997 to 1999. In the total population, the correlation between BAI and BF% was stronger (r = 0.78) than the correlation between BMI and BF% (r = 0.56) with similar results in the middle-aged and elderly groups. However, in men and women separately, BMI was a better correlate of BF% (for men, r = 0.76; for women, r = 0.81) than was BAI (for men, r = 0.57; for women, r = 0.72). BMI was also a better correlate of BF% than was BAI assessed by partial correlations adjusted for sex (for BMI-BF%, r = 0.79; for BAI-BF%, r = 0.67). Bland-Altman plots and BF%-stratified analyses showed that BAI tended to overestimate BF% in lean subjects and to underestimate it in those with higher proportions of body fat, but that it predicted BF% well for those whose BMI was in a normal range. At the individual level and in population studies adjusted for sex, BMI outperforms BAI as a predictor of BF%.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorptiometry, Photon
  • Adiposity / ethnology*
  • Aged
  • Body Mass Index*
  • European Continental Ancestry Group / statistics & numerical data*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Norway
  • Predictive Value of Tests