Diagnostic test statistics (2 × 2)

Sensitivity, specificity, predictive values, and likelihood ratios from a 2 × 2 table.

Previewv0.1.0 · Pending clinical review

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When to use
  • Evaluating a diagnostic test.
Pearls and pitfalls
  • Predictive values depend on prevalence in the studied sample.
Why use

Every statistic from one table.

Sens=TPTP+FN
Spec=TNTN+FP
PositiveLR=Sens1−Spec
where
TP, FP, FN, TN
True and false positives and negatives

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