Skip to main content

Table 4 Sensitivity and specificity of overweight and obesity: BMI percentile vs. DXA percent body fat cutpoints

From: Correlations among adiposity measures in school-aged children

BMI DXA % body fat        
    Kappa Sens Spec LR+ LR- AUC
  Females: ≥30.10% Males: ≥24.63% 2 Females: <30.10% Males: <24.63% 2 0.63 0.73 0.90 7.3 0.31 0.90
≥85 th percentile 1 169 64       
<85 th percentile 1 64 578       
  Females: ≥34.00% Males: ≥29.00% 2 Females: <34.00% Males: <29.00% 2 0.71 0.75 0.96 19.6 0.26 0.94
≥95 th percentile 1 85 29       
<95 th percentile 1 29 732       
  1. 1 Cutoffs defined by CDC growth reference curves [20].
  2. 2 Based on the prevalence of BMI percentile-defined overweight and obesity in females and males in our dataset. Abbreviations are as follows: Sens sensitivity, Spec specificity, LR+ likelihood ratio positive, LR- likelihood ratio negative, AUC area under the receiver operating characteristic curve.