A Study to Assess Spironolactone's Efficacy in Patients with Heart

question 90

Multiple Choice

A study to assess spironolactone's efficacy in patients with heart failure is performed.  450 patients receive either spironolactone or placebo for two years.  Neither the patients nor physicians are aware of who takes the drug or placebo.  The study setup described above is most effective in preventing:

• A)Beta error
• B)Recall bias
• C)Observer bias
• D)Effect modification
• E)Selection bias

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Definitions:

Impedes

Impedes means to slow down the progress or obstruct the path of something.

Complicated Grief

A prolonged, intense state of mourning that impairs the individual’s ability to function in daily life.

Mourners

Individuals who are experiencing grief and sorrow due to the loss of someone close to them.

Percent

A numerical or quantitative measure often used to express a proportion out of 100.