Diagnostic Test Accuracy
Diagnostic test accuracy in R from a 2×2 table — sensitivity, specificity, PPV, NPV and likelihood ratios, in base R.
Evaluate a diagnostic test or classifier from its 2×2 table.
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Everything in the video — edit it and press Run Code to run real R right here, or copy it:
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When to use it. Sensitivity and specificity describe the test; predictive values depend on prevalence; likelihood ratios summarise how much a result shifts the odds of disease.
Try the diagnostic test calculator · read diagnostic accuracy in R.