Lab skills

Question 1

Define accuracy

Answer 1

How close a measurement is to a true and actual value.

Question 2

Define precision

Answer 2

How reproducible measurements are.

Question 3

Define sensitivity

Answer 3

Number of patients who are correctly diagnosed as positive for the target disease out of the total number of diseased patients.

Question 4

Define specificity

Answer 4

Number of patients who are correctly undiagnosed with the target disease out of the total number of patients who are not diseased.

Question 5

What is the difference between reference test and index test?

Answer 5

Reference test you compare against the index test which is under evaluation.