Plot of the area under the receiver operating characteristic curves (AUC) over an increasing number of features included in type 2 diabetes risk classification models.

<p>The combined model which includes sex, age, systolic blood pressure, waist, total cholesterol, HDL-C, triglycerides and <i>HbA1c</i> and 287 individual lipid species as features in the model attained a maximum AUC of 0.826 using 23 features the most frequent of which are listed in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0076577#pone-0076577-t004" target="_blank">Table 4</a>. Solid lines denote the mean AUC and broken lines represent the corresponding 95% confidence intervals plotted against the number of features incorporated into the model. The plot is truncated at 23 features.