Diagnostic Post Test Probability of Disease Calculator

Posttest probability is a type of subjective probability of a disease that turns out to be positive or negative depending on the result of the diagnostic test conducted. This online calculator computes the post test probability of a disease when the values of pretest probability and likelihood ratio are given

Diagnostic Post Test Probability of Disease Calculation

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Formula: O = p1 / ( 1 - p1 ), p2 = O * L, p = p2 / ( 1 + p2 ), Where, p1 is the pretest probability, O is the pretest odds, p2 is the posttest odds, L is the likelihood ratio, p is the posttest probability.

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