ARDMS RVT Exam Questions and Answers |New Update with 100% Verified Answers
Positive Predictive Value (PPV) The probability that a patient with a positive test result really
does have the disease.
=A / A + B
Negative Predictive Value (NPV) The probability that a patient with a negative test result
really is free if disease.
D/D+C
Sensitivity The ability of a test to detect disease when disease is present.
A/A+C
Specificity The ability of a test to correctly identify a normal result.
D/D+B
Accuracy The overall percentage of correct results. The degree of "closeness" to something
to its actual value.
A+D/A+B+C+D
True Positive The number of tests that say disease is present and the gold standard agrees.
A
True Negative The number of tests that say disease is not present that the gold standard
agrees with.
D
False Positive The number of tests that say disease is present but negative by the gold
standard.
Positive Predictive Value (PPV) The probability that a patient with a positive test result really
does have the disease.
=A / A + B
Negative Predictive Value (NPV) The probability that a patient with a negative test result
really is free if disease.
D/D+C
Sensitivity The ability of a test to detect disease when disease is present.
A/A+C
Specificity The ability of a test to correctly identify a normal result.
D/D+B
Accuracy The overall percentage of correct results. The degree of "closeness" to something
to its actual value.
A+D/A+B+C+D
True Positive The number of tests that say disease is present and the gold standard agrees.
A
True Negative The number of tests that say disease is not present that the gold standard
agrees with.
D
False Positive The number of tests that say disease is present but negative by the gold
standard.
