Table 3. Results of ROC curve analyses for the associations among MVPA, VPA, and central obesity in 324 children aged 8- to 9-years.
| 95% CI | Threshold | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | AUC | Lower | Upper | p | Youden index | (min/day) | Sensitivity | Specificity | ||
| MVPA | ||||||||||
| Boys | 156 | 0.64 | 0.54 | 0.74 | 0.008 | 0.231 | 76.4 | 77% | 46% | |
| Girls | 168 | 0.64 | 0.55 | 0.74 | 0.006 | 0.307 | 73.8 | 59% | 71% | |
| VPA | ||||||||||
| Boys | 156 | 0.68 | 0.58 | 0.78 | <0.001 | 0.298 | 12.5 | 83% | 47% | |
| Girls | 168 | 0.64 | 0.54 | 0.74 | 0.007 | 0.283 | 9.7 | 65% | 63% | |
Note:
MVPA, moderate-vigorous physical activity; VPA, vigorous physical activity; n, number of participants; AUC, area under the curve; CI, confidence interval; p value for the AUC (ROC curve analyses), p < 0.05 in bold.