Many physicians did not realize that bleeding was an ineffective treatment for typhoid fever until researchers made effective use of

Question

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The use of a control group allows researchers to compare the effectiveness of different treatments in a controlled setting. By comparing the outcomes of patients treated with bleeding to those who received no treatment, researchers were able to determine that bleeding was an ineffective treatment for typhoid fever. Systematic desensitization, psychopharmacology, and exposure therapies are not relevant to the treatment of typhoid fever.

Many Physicians Did Not Realize That Bleeding Was an Ineffective