One hundred volunteers who suffer from agoraphobia are available for a study. Fi

Question

One hundred volunteers who suffer from agoraphobia are available for a study. Fifty are selected at random and are given the drug imipramine, which is believed to be effective in treating agoraphobia. The other 50 are given a placebo. Psychiatrists evaluate the agoraphobia symptoms of all volunteers after two months to determine if there has been substantial improvement in the severity of the symptoms.

What is the factor in the experiment?

the 100 volunteers with agoraphobia

imipramine

the psychiatrists

the symptoms evaluated by the psychiatrists.

the 100 volunteers with agoraphobia

imipramine

the psychiatrists

the symptoms evaluated by the psychiatrists.

Explanation / Answer

The factor variable is the status of the patient whether he or she received the drug imipramine. Denote by "1" if the patient receieved the drug and by "0" is s/he did not.

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