Bayes' Theorem
Info
Pretest
unit % Fraction
Sensitivity
unit % Fraction
Specificity
unit % Fraction
R e s u l t s
Posttest Probability
? ? ?
Show Results
Info
Bayes' Theorem

Positive =
((Pretest × Sensitivity) ÷ ((Pretest × Sensitivity) + ((100 - Pretest) × (100 - Specificity)))) × 100

Negative =
((Pretest × (100 - Sensitivity)) ÷ (((100 - Pretest) × Specificity) + (Pretest × (100 - Sensitivity)))) × 100