Data Input Table
Table 1
Table 2
Expected between-diagnostic differences in percentage of TN and FN
Expected between-diagnostic differences in percentage of negative predictive agreement and disagreement
Expected between-diagnostic differences in percentage of true susceptiblity and false susceptiblity
Calculating the NNT(Number Needed to Test), including NNTP (for Positive) and NNTN (for Negative)
Calculating the NNT(Number Needed to Test), including NNTR (for Resistance) and NNTS (for Susceptibility)
Weighted Accuracies as a Function of the Relative Importance
SaveNotes:
Always positive test: a test whose result always indicates positivity.
Always negative test: a test whose result always indicates negativity.
Fair random test: a test having 50% sensitivity and 50% specificity (ie, a flip of a fair coin).
Always positive test: a test whose result always indicates PPA.
Always negative test: a test whose result always indicates NPA.
Fair random test: a test having 50% PPA and 50% NPA (ie, a flip of a fair coin).
Always resistance test: a test whose result always indicates resistance.
Always susceptibility test: a test whose result always indicates susceptibility.
Fair random test: a test having 50% resistance sensitivity and 50% susceptibility sensitivity (ie, a flip of a fair coin).