Lecture 7 9/4/24

Question 1

What is true prevalence?

Answer 1

pre-test probability of a disease

Question 2

What is apparent prevalence?

Answer 2

post-test probability of a disease

Question 3

What is accuracy?

Answer 3

the ability of the test to correctly identify both those with and without the disease

Question 4

How is accuracy calculated?

Answer 4

the proportion of all test results, both positive and negative, that are correct

Question 5

How is true prevalence calculated?

Answer 5

the total number of truly positive individuals/total population

Question 6

How is apparent prevalence calculated?

Answer 6

the total number of test positive individuals/total population