Cocaine addiction is hard to break. Addicts need cocaine to feel any pleasure, s

Question

Cocaine addiction is hard to break. Addicts need cocaine to feel any pleasure, so perhaps giving them an antidepressant drug will help. An experiment assigned 72 chronic cocaine users to take either an antidepressant drug called desipramine, lithium, or a placebo. (Lithium is a standard drug to treat cocaine addiction. A placebo is a dummy drug, used so that the effect of being in the study but not taking any drug can be seen.) One-third of the subjects, chosen at random, received each drug. Here are results after three years:

(a) Compare the effectiveness of the three treatments in preventing relapse. Use percents and give answers to 1 decimal place.

(b) Which drug seems to do the best job of preventing relapse?

LithiumThey all perform about the same.    PlaceboDesipramine

Explanation / Answer

a)

from above given data:

desipramine =(13/24)*100=54.2%

lithium =(6/24)*100=25.0%

placebo =(3/24)*100=12.5%

b)

Desipramine

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