(Single Best Answer) Question 1: If the specificity of the test was 80% and the senstivity remains the same in a population with 50% prevalence , the positive predictive value of the test will be ?
A) 90% B) 80% C) 70% D) 60% Answer (Select an option above to get the answer):
A) Senstivity of a test B) Specificity of a test C) Positive predictive value of a test D) Dependability of a test Answer (Select an option above to get the answer):
(Single Best Answer) Question 3: In a group of patients presenting to a hospital emergency with abdominal pain, 30% of patients have acute appendicitis, 70% of patients with appendicitis have a temperature greater than 37.5°C and 40% of patients without appendicitis have a temperature greater than 37.5°C. Considering these findings, which of the following statements is correct ?
A) The sensitivity of temperature greater than 37.5°C as a marker for appendicitis is 21/49 B) The specificity of temperature greater than 37.5°C as a marker for appendicitis is 42/70 C) The positive predictive value of temperature greater than 37.5°C as marker for appendicitis is 21/30 D) The specificity of the test will depend upon the prevalence of appendicitis in the population to which it is applied Answer (Select an option above to get the answer):
A) Sensitivity B) Specificity C) Postivity predictivity D) Negative predictivity Answer (Select an option above to get the answer):
(Single Best Answer) Question 5: Which one of the following relationships shown between different parameters of a performance of a test, is correct ?
A) Sensitivity = 1 - specificity B) Positive Predictive Value = 1 - negative predictive value C) Sensitivity is inversely proportional to Specificity D) Sensitivity = 1 - Positive predictive value Answer (Select an option above to get the answer):