Two cancer treatments were being compared. Thirty randomly selected hospitals pa

Question

Two cancer treatments were being compared. Thirty randomly selected hospitals participated in the experiment, with ten hospitals using each treatment, and ten using traditional treatments (as a control). In each hospital, fifteen patients were treated, each having one of three types of cancer (i.e., there were five patients with each type of cancer). The health of each patient was rated on a ten-point scale after one week, two weeks, and three weeks of treatment.

State the relationship between the three factors

Explanation / Answer

The health status depends on the treatments, the type of cancer, and the hospital.

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