5 Helping cocaine addicts. Cocaine addiction is hard to break. Addicts need cocaine to
Chapter 0, Problem 6.26(choose chapter or problem)
5 Helping cocaine addicts. 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 the results after three years:11 Desipramine Lithium Placebo Relapse 10 18 20 No relapse 14 6 4 Total 24 24 24 (a) Compare the effectiveness of the three treatments in preventing relapse. Use percents and draw a bar graph. (b) Do you think that this study gives good evidence that desipramine actually causes a reduction in relapses?
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