Considering that the test results are already available, a different question may arise in the evaluation of the validity of a diagnostic test, whi...

Considering that the test results are already available, a different question may arise in the evaluation of the validity of a diagnostic test, which is the probability of the outcome given the results of a test. This probability is called the predictive value of a test. Regarding this, consider the statements below and mark the incorrect alternative:

a) The calculation of the Positive Predictive Value (PPV) of the test considers the number of people who were true-positive divided by the sum of true-positives plus false-positives;
b) The higher the PPV, the greater the probability of disease given that the test result was positive;
c) The Negative Predictive Value (NPV) is the proportion of people with a negative test who do not have the outcome;
d) Predictive values can be influenced by the prevalence of the outcome;
e) The PPV and NPV of the same test will be different in populations with different disease prevalences;
f) The lower the prevalence of the outcome, the higher the positive predictive value of a test.
a
b
c
d
e
f