Likelihood Ratio (LR) - Positive, Negative Ratio Test Formula - Medical Care Indicators

Formula:



Positive LR = (a/(a+c)) / (b/(b+d))
Negative LR = (c/(a+c)) / (d/(b+d))
Positive LR = (sensitivity)/(1-specificity)
Negative LR = (1-sensitivity)/(specificity)

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