Table 3 Diagnostic performance of GLP 1 for diagnosing gestational diabetes mellitus
From: The role of incretins in gestational diabetes: a case-control study on the impact of obesity
Quantities derived from the 2-by-2 contingency table | Value | 95% CI | ||
|---|---|---|---|---|
Overall fraction correct (often referred to simply as “Accuracy”) | 0.708 | 0.601 | 0.796 | |
Mis-classification Rate | 0.292 | 0.204 | 0.399 | |
Sensitivity | 0.646 | 0.538 | 0.734 | |
Specificity | 0.771 | 0.663 | 0.859 | |
Positive Predictive Value (PPV) | 0.738 | 0.615 | 0.838 | |
Adjusted PPV (user set prevalence: 10%) | 0.238 | 0.135 | 0.386 | |
Negative Predictive Value (NPV) | 0.685 | 0.590 | 0.763 | |
Adjusted NPV (user set prevalence: 10%) | 0.951 | 0.858 | 0.984 | |
Number Needed to Treat (NNT) | 2.363 | 1.662 | 4.878 | |
Absolute Risk Reduction (ARR) | -0.423 | -0.602 | -0.205 | |
Relative Risk Reduction (RRR) | -1.345 | -2.542 | -0.500 | |
Positive Likelihood Ratio (+ LR) | 2.818 | 1.599 | 5.191 | |
Negative Likelihood Ratio (-LR) | 0.459 | 0.310 | 0.696 | |
Diagnostic Odds Ratio | 6.134 | 2.299 | 16.734 | |
Error Odds Ratio | 0.542 | 0.592 | 0.453 | |
Youden’s J | 0.417 | 0.202 | 0.592 | |
Number Needed to Diagnose (NND) | 2.400 | 1.688 | 4.956 | |
Number Needed to Mis-diagnose (NNM) | 3.429 | 2.506 | 4.906 | |