Statistics

Question 1

What is the calculation used to determine PPV?

Answer 1

True positives / True positives + False positives

Question 2

What is the calculation used to determine NPV?

Answer 2

True negatives / True negatives + False negatives

Question 3

What is the calculation used to determine sensitivity?

Answer 3

True positives / True positives + False negatives

Question 4

What is the calculation used to determine specificity?

Answer 4

True negatives / True negatives + False positives

Question 5

What is the calculation used to determine odds?

Answer 5

Probability that x will happen / Probability that x will not happen

Question 6

What is the calculation used to determine Odds ratio?

Answer 6

Odds in exposed group / Odds in unexposed group

Question 7

What is the calculation used to determine risk ratio?

Answer 7

(Number with disease exposed/total exposed) / (number with disease unexposed/total unexposed)