Figure 2.

Kernel density representation of the clinical sample from the benign and malignant categories.

Notes: (A) Normalized Hp level in the benign ovarian cyst fluid samples is below the cutoff range. (B) Normalized Hp level in the malignant samples is above the cutoff range. Cutoff range is represented by a horizontal line across the plot. (C) Averaged ROC curve (red) for LR model estimated from testing data set by repeating the cross-validation 1,000 times. The mean and SD for the AUC are estimated to be 0.966±0.03. A diagonal line is plotted to represent an ROC curve for a nondiscriminatory test.

Abbreviations: AUC, area under the curve; Hp, haptoglobin; LR, logistic regression; ROC, receiver operating characteristic.