Clinical Study
Accuracy of Neck Circumference in Classifying Overweight and Obese US Children
Table 4
Comparisons of neck circumference (NC), body mass index (BMI), and percent body fat (BF%) in classification of overweight/obese children (
).
| | | NC by Nafiu et al. [12] versus BF% | BMI versus BF% | | Point estimate | 95% CI | Point estimate | 95% CI |
| | Boys () | | | | | | Weighted Cohen’s kappa (κ) | .25 | 0, .48 | .57 | .30, .74 | | Sensitivity (%) | 38.1 | 25.9, 50.3 | 57.1 | 44.7, 69.6 | | Specificity (%) | 85.0 | 76.4, 94.0 | 95.0 | 89.5, 100 | | Positive predictive value (%) | 57.1 | 44.7, 69.6 | 85.7 | 76.9, 94.5 | | Negative predictive value (%) | 72.3 | 61.1, 83.6 | 80.9 | 71.0, 90.7 | | Girls () | | | | | | Weighted Cohen’s kappa (κ) | .45 | .08, .73 | .52 | .13, .78 | | Sensitivity (%) | 50.0 | 32.4, 67.6 | 50.0 | 32.4, 67.6 | | Specificity (%) | 91.3 | 81.4, 100 | 95.7 | 88.5, 100 | | Positive predictive value (%) | 66.7 | 50.1, 83.3 | 80.0 | 65.9, 94.1 | | Negative predictive value (%) | 84.0 | 71.1, 96.9 | 84.6 | 71.9, 97.3 |
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