ROC Curve

Figure 1. Scale tab of the Properties dialog box; Y Axis
Scale tab of the Properties dialog box; Y Axis

The ROC curve is a visual index of the accuracy of the assay. The further the curve lies above the reference line, the more accurate the test. Here, the curve indicates that the assay achieves nearly perfect sensitivity with very little loss of specificity.

For a numerical summary, look below the graph at the Area Under the Curve table.

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