A Study Investigating a New Test for Diagnosing Acute Myocardial

question 87

Multiple Choice

A study investigating a new test for diagnosing acute myocardial infarction (AMI) has just been initiated.  The sensitivity of the test is estimated at 75% and the specificity at 80%.  The study enrolls 600 patients, of whom 200 are confirmed AMI cases as determined by the diagnostic gold standard.  How many false negatives are to be expected in the study?

• A)50
• B)80
• C)120
• D)150
• E)400