FIGURE 2.

Receiver operating curves (ROC) curves to determine the diagnostic utility of serum uric acid ratio in (A) Preeclampsia (B) Preeclampsia Group A (who develop preeclampsia before 34 weeks of gestation). AUCs for both curves were >0.9 showing that UAr may be a good screening tool. However, it has very low positive predictive values (19.2 and 4.7, respectively). In contrast, the negative predictive values were 99.5% for preeclampsia and 100% for Group A of preeclampsia. Area under the curve (AUC), confidence interval (CI), Positive Predictive Values (PPV) Negative Predictive Values (NPV), probability indices (LR).