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Bayesian Statistics I MultiCalc®

TruePos = Sensitivity * Prevalence
FalsePos = (1 - Specificity) * (1 - Prevalence)
TrueNeg = Specificity * (1 - Prevalence)
FalseNeg = (1 - Sensitivity) * Prevalence
PosPredValue = 100 * TruePos / (TruePos + FalsePos)
NegPredValue = 100 * TrueNeg / (TrueNeg + FalseNeg)
LRPos = Sensitivity / (1-Specificity)
LRNeg = (1-Sensitivity) / Specificity
PreTestOdds = Prevalence / (1 - Prevalence)
PostOddsPos = PreTestOdds * LRPos
PostProbPos = PostOddsPos / (1 + PostOddsPos)
PostOddsNeg = PreTestOdds * LRNeg
PostProbNeg = PostOddsNeg / (1 + PostOddsNeg)
FalsePosRate = 100 * FalsePos / (FalsePos + TrueNeg)
FalseNegRate = 100 * FalseNeg / (TruePos + FalseNeg)
OverallAcc = 100 * (TruePos + TrueNeg)

Input:

Prevalence  
Sensitivity  
Specificity  

Results:

True Pos  
False Pos  
True Neg  
False Neg  
Pos Pred Value  
Neg Pred Value  
LR Pos  
LR Neg  
Pre Test Odds  
Post Odds Pos  
Post Prob Pos  
Post Odds Neg  
Post Prob Neg  
False Pos Rate  
False Neg Rate  
Overall Acc  
 
Decimal Precision:

     


 
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All information contained in and produced by the MedCalc 3000 system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.
 

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