INS and metabolic syndrome: On the contrary, the use of the formula deriving from the multivariable logistic regression model [Logit P = −3.815 − (0.681 × female sex) + (0.416 × BMI SDS) + (4.232 × APRI) − (0.0443 × insulin) + (0.346 × HOMA IR) − (0.172 × metabolic syndrome) + (0.00709 × triglycerides) + (0.0843 × uric acid)] (Figure 2) improved the accuracy to 81.34% (p < 0.0001) with a sensitivity of 74.24% and specificity of 100% at a cut-off of Logit P < −0.00146.