what's the correct formula to use in a blood test for the gold standard? how to compute test samples how to use the sample size comparison in diagnostic test what is the formula to establish correlation of the two diagnostic tests? what is the best formula to compute for a good sample size? how to determine sample size if an organism is performing two diagnostic tests, what is the best formula to compute for a good sample size? what formula may be used to compute a good sample size? what formula may be used to compute sample size for diagnostic testing? how is the sample size computed to compare two diagnostic tests what is the formula to calculate the difference in pv and pv between two diagnostic tests? what is the formula used for determining the correlation of a diagnostic test how does npv compare to the gold standard why do they do the bland plot in diagnosing tests how to determine sample size of a diagnostic test what type of plot is used to determine the correlation between the two tests? how to compare two types of diagnostic tests how to compute ppv in lab test what is the correct formula to compute the ppv in diagnostic test which formula may be used to compute sample size?