STATISTICS

Question 1

How is SENSITIVITY calculated?

Answer 1

TP/ (TP+FN)

Question 2

How is SPECIFICITY calculated?

Answer 2

TN/ (TN+FP)

Question 3

How is PPV calculated?

Answer 3

TP/ (TP+FP)

ALL THE POSITIVES

The PPV is the probability that a positive result means you have the disease

Question 4

How is NPV calculated?

Answer 4

TN/ (TN+FN)

ALL THE NEGATIVES

The chance that a negative test result means you do not have the disease