Table II.
Thresholds for detecting severe obesity in the initial cohorts
| High-specificity threshold | 85th percentile threshold | |||||
|---|---|---|---|---|---|---|
| Ages | Model AUC | Threshold percentile | Sensitivity, n/N % | Specificity, n/N (%) | Sensitivity, n/N (%) | Specificity, n/N (%) |
| BMI percentile | ||||||
| 6 mo | 0.851 | 83.1 | 23/47 (49) | 110/115 (96) | 22/47 (47) | 110/115 (96) |
| 12 mo | 0.890 | 89.8 | 38/67 (57) | 106/111 (95) | 41/67 (61) | 105/111 (95) |
| 18 mo | 0.970 | 83.4 | 49/55 (89) | 84/88 (95) | 47/55 (85) | 85/93 (97) |
| WFL percentile | ||||||
| 6 mo | 0.853 | 85.3 | 23/47 (49) | 110/115 (96) | 23/47 (49) | 110/115 (96) |
| 12 mo | 0.889 | 84.9 | 40/67 (60) | 106/111 (95) | 40/67 (60) | 106/111 (95) |
| 18 mo | 0.972 | 72.4 | 51/55 (93) | 84/88 (95) | 43/55 (78) | 88/88 (100) |
| Weight-for-age percentile | ||||||
| 6 mo | 0.776 | 86.6 | 50/98 (51) | 152/160 (95) | 50/98 (51) | 146/160 (91) |
| 12 mo | 0.840 | 78.1 | 58/122 (48) | 187/196 (95) | 42/122 (34) | 193/196 (98) |
| 18 mo | 0.902 | 86.6 | 78/123 (63) | 162/170 (95) | 81/123 (66) | 161/170 (95) |
AUC, area under the curve.