ROC analysis and diagnostic screening tests were used to determine the cut-off point for serum adropin to predict HOMA-IR at 2.5
| HOMA-IR at 2.5 | AUC | P value | Cut-off | Sensitivity | Specificity | PPV | NPV |
| Adropin | 0.648 | 0.026 | ≤216.7 | 70.7 | 56.2 | 67.4 | 60 |
Statistical significance at p<0.05 and p<0.001.
AUC, area under the curve; HOMA-IR, homeostatic model assessment-insulin resistance; PPV, positive predictive value; ROC, receiver operating characteristics curve.