Questions
01) A screening test is done to detect potential health disorders or diseases in people who
do not have any symptoms of the disease. The goal is early detection and lifestyle
changes or surveillance, to reduce the risk of disease, or to detect it early enough to
treat it most effectively.
New screening test was developed to diagnose seasonal viral fever. Where 100 people
tested for the disease. With the help of the following equations answer the questions
given below.
Test result Patients with disease Patients without Total number tested
disease
Positive 20 33 53
Negative 10 37 47
30 70 100
i. What is the prevalence of the disease?
ii. What is the clinical sensitivity?
iii. What is the clinical specificity?
iv. What is the positive predictive value?
v. What is the negative predictive value?
vi. As per the results are you going to accept this test, provide the justification.
01) A screening test is done to detect potential health disorders or diseases in people who
do not have any symptoms of the disease. The goal is early detection and lifestyle
changes or surveillance, to reduce the risk of disease, or to detect it early enough to
treat it most effectively.
New screening test was developed to diagnose seasonal viral fever. Where 100 people
tested for the disease. With the help of the following equations answer the questions
given below.
Test result Patients with disease Patients without Total number tested
disease
Positive 20 33 53
Negative 10 37 47
30 70 100
i. What is the prevalence of the disease?
ii. What is the clinical sensitivity?
iii. What is the clinical specificity?
iv. What is the positive predictive value?
v. What is the negative predictive value?
vi. As per the results are you going to accept this test, provide the justification.
