MDCalc

Basic Statistics Calc

Calculates common epidemiologic values for diagnostic tests and treatments.

Select “Diagnostic Test” to calculate stats related to diagnosis (sens, spec, prevalence, LR+, LR-, PPV, NPV). Select “Treatment” to calculate stats related to treatment (RR, OR, ARR, RRR, NNT). If entering sens, spec, and prevalence, enter as percentages (e.g. 67%, not 0.67).

Select stats type

Result:

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Advice

To practice evidence-based medicine, apply statistics and results of scientific studies to individual patients using clinical judgment.