Likelihood Ratios

•Likelihood
Ratio for a Positive Result (LR+)

–The number of patients testing __positive__
for the target disorder who have the disease for every patient
testing __positive__ that does not have it

•Likelihood
Ratio for a Negative Result (LR-)

–The number of patients testing __negative__
for the target disorder who have the disease for every patient
testing __negative__ that does not have it