| ROC curves plot the sensitivity of a test versus its false positive rate for various points (definitely present, probably present to definitely absent) and is especially applicable when test results are interpreted subjectively. ROC analysis has wide applicability in radiology research for comparing observers, modalities, and tests. The simple program below uses only 3 points (5 is more common) but still demonstrates the principles of the area under the curve and is a quick way of performing a preliminary analysis or quality assurance study. |
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