Introduction to Epidemiology 6th Edition by Ray M Merrill

Exercise 4

As an occupational health epidemiologist, you are required to measure the effect of stress on the workers in your manufacturing plant. Two different tests previously developed to measure stress in industrial workers are selected: stress test alpha and stress test delta. The sensitivity and specificity of each test are shown here.

Stress Test Alpha	Stress Test Delta
Sensitivity = 60%	75%
Specificity = 95%	90%

a. Which test generates the greatest proportion of FNs?

b. Which test generates the greatest proportion of FPs?

c. Which test would you prefer?

Step 1 of 5

Sensitivity of screening test is the fraction of individuals having the positive test results. It is the test’s ability to identify the individuals without the disease correctly.

Where, TP is true positive and FN is false negative