Sensitivity & Specificity (lesson 13b)

Question 1

What is a FNV? (False negative value)

Answer 1

The number of diseased persons testing negative

Question 2

What is FPV? The false positive value

Answer 2

The number of non diseased people who tested positive

Question 3

What is TD

Answer 3

The total of diseased persons

Question 4

What is TN

Answer 4

The total number of persons testing negative

Question 5

What is TND

Answer 5

The number of non diseased person

Question 6

What is the TNV (true negative value)

Answer 6

The number of disease free persons testing negative

Question 7

What is the equation for Sensitivity?

Answer 7

TPV/TD

Question 8

What is the specificity equation?

Answer 8

TNV/TND

Question 9

A high sensitivity test will have what type of specificity?

Answer 9

Low

Question 10

What is a type of test with high sensitivity?

Answer 10

Mammograph

Question 11

What is a low sensitivity high specificity type of test?

Answer 11

Urine

Question 12

What is the equation for a positive predictive value?

Answer 12

True positive value/total positive

Question 13

What is the equation for negative predictive value?

Answer 13

True negative value/total negative

Question 14

What is the equation for accuracy of a test?

Answer 14

(True positive value + true negative value)/ total of tested