Michael has written a fine piece on the role of accuracy of diagnostic testing and the implications of using tests known to produce false positives in the PHP / Medical Board environment.
To have striven, to have made an effort, to have been true to certain ideals — this alone is worth the struggle. We are here to add what we can to, not to get what we can from, life. – William Osler
Diagnostic medicine is the process of identifying the condition or disease that a patient has and ruling out conditions or diseases the patient does not have through assessment of the patient’s signs, symptoms, and results of various diagnostic tests.
Diagnostic Test Accuracy
Diagnostic test accuracy is simply the ability of the test to discriminate among alternative states of health (Zweig and Campbell, 1993).
If a test’s results do not differ between alternative states of health, then the test has insignificant accuracy; if the results do not overlap with other states of health then the test has perfect accuracy. Most tests accuracies fall between these two extremes.
The intrinsic accuracy of…
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