Using the side-by-side bar chart and/or proportions table, answer the following questions:

What percent of those assigned to desipramine relapse? Answer the same question for those assigned to lithium and the placebo.

Does it appear that a relationship exists between the type of treatment and relapse? Explain why or why not. If a relationship exists, briefly describe the relationship. (That is, briefly describe which treatment results in a higher proportion relapsing and which results in a lower proportion relapsing. Therefore, what would you suggest for those trying to break a cocaine addiction?)

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