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

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Definitions:

Social Anxiety Disorder

A chronic mental health condition in which social interactions cause irrational anxiety, fear, embarrassment, or concern about being judged or viewed negatively by others.

Inhibited

Characterized by a restraint or suppression of action, feeling, or expression.

Inhibited Children

Children who display a consistent pattern of shyness, timidity, and fearfulness in unfamiliar situations or in response to novel stimuli.