Table 8 Sensitivity, specificity and positive predictive value of self-reported data and correction equations for weight status
Grade | Weight Status1 | Sensitivity2 | Specificity3 | Positive Predictive Value4 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Girls | Boys | All | Girls | Boys | All | Girls | Boys | All |
Self-Reported | ||||||||||
8th | Overweight | 58.2% | 62.7% | 60.5% | 91.2% | 87.5% | 89.2% | 60.1% | 51.6% | 55.3% |
| Â | Obese | 66.8% | 73.6% | 70.8% | 97.7% | 96.4% | 97.0% | 84.0% | 83.0% | 83.4% |
| Â | Overweight/Obese | 77.2% | 84.6% | 81.3% | 93.9% | 88.5% | 91.1% | 86.7% | 81.2% | 83.4% |
11th | Overweight | 64.1% | 60.4% | 62.0% | 95.2% | 92.7% | 93.9% | 71.1% | 63.8% | 66.9% |
| Â | Obese | 76.3% | 85.0% | 81.9% | 98.9% | 97.5% | 98.1% | 89.8% | 88.7% | 89.1% |
| Â | Overweight/Obese | 81.4% | 84.2% | 83.1% | 97.5% | 93.6% | 95.6% | 92.5% | 88.4% | 89.9% |
Correction Equations | ||||||||||
8th | Overweight | 67.4% | 62.5% | 64.8% | 86.8% | 86.9% | 86.9% | 54.0% | 50.2% | 52.1% |
| Â | Obese | 73.4% | 80.2% | 77.4% | 97.1% | 96.5% | 96.8% | 82.0% | 84.7% | 83.7% |
| Â | Overweight/Obese | 86.0% | 86.3% | 86.1% | 88.2% | 86.9% | 87.5% | 78.9% | 79.4% | 79.2% |
11th | Overweight | 72.0% | 69.6% | 70.7% | 91.2% | 90.6% | 90.9% | 59.9% | 61.2% | 60.6% |
| Â | Obese | 82.4% | 85.5% | 84.4% | 99.0% | 97.2% | 98.1% | 91.4% | 87.8% | 89.0% |
| Â | Overweight/Obese | 85.9% | 89.7% | 88.2% | 92.0% | 91.1% | 91.5% | 80.1% | 85.2% | 83.2% |