Social & Preventive Medicine Which one of the following statements regarding pre-post clinical trial is most appropriate – A They cannot be randomized B They are useful in studies involving mortality C They use the patient as his or her own control D They are usually easier to interpret than the comparable parallel clinical trial 💡 Explanation Which one of the following statements regarding pre-post clinical trial is most appropriate - ✓ Correct Answer: C. They use the patient as his or her own control