Table 1 Concordance of obesity classification using body mass index and percent body fat, stratified by sex
Parameter | Boys (n = 618) | Girls (n = 256) |
|---|---|---|
Sensitivity | 93% (40/43) | 100% (17/17) |
Specificity | 88% (508/575) | 70% (168/239) |
Positive predictive value | 37% (40/107) | 19% (17/88) |
Negative predictive value | 99% (508/511) | 100% (168/168) |
Agreement rate | 0.48 | 0.24 |
ROC (sensitivity/1-specificity) | 0.90 | 0.85 |