Clinical Trials

3. Classification

Exercise 4

Click and drag the study designs to match each with the correct description.

Study Designs:

  • Parallel-Group Trial
  • Factorial Design
  • Cluster Randomized
  • Cross Over

Brief Descriptions:

While drug A is being tested against placebo, patients are re-randomized to drug B or placebo. Entire hospitals or physician practices are randomized to standard or new therapy rather than individuals. Randomize patients to different sequences of treatments, but all patients eventually get all treatments in varying order.

Randomizing patients to either test drug or standard treatment.

Answers:
While drug A is being tested against placebo, patients are re-randomized to drug B or placebo. [Factorial Design]

Entire hospitals or physician practices are randomized to standard or new therapy rather than individuals. [Cluster Randomized]

Randomize patients to different sequences of treatments, but all patients eventually get all treatments in varying order. [Cross Over]

Randomizing patients to either test drug or standard treatment. [Parallel-Group Trial]