Multiple Choice
A prophylactic trial is designed to:
A) compare rates of disease, death, and recovery in a population.
B) measure how well drugs produce improvement in a patient's illness.
C) evaluate the effectiveness of a substance used to prevent disease.
D) estimate the impact of exposure on the incidence of disease.
Correct Answer:
Verified
Correct Answer:
Verified
Q18: Controlled clinical trials enable researchers to:<br>A) test
Q19: Intervention designs involve only controlled clinical trials.
Q20: Which of the four stages of evaluation
Q21: To test the efficacy of vitamin C
Q22: The purpose of randomization is to reduce
Q24: You would like to assess the effectiveness
Q25: To test the efficacy of a health
Q26: The entire population of a given community
Q27: You are interested in finding out whether
Q28: The Stanford Five-City Project, a major community