Question

3. A random sample of middle age sedentary males was selected from four census tracts, and each man was examined for coronary artery disease. All those having the disease were excluded from the study. All others were randomly assigned to either an exercise group, which followed for a two-year program of systematic exercise, or to a control group, which had no exercise program. Both groups were observed semiannually for any difference in incidence of coronary heart disease. • What type of study (study design) you would assign to this information? Why? [ONE POINT]

Answer 1

The study design of Randomized control trial is best suitable for this study. Because the participants are randomly assigned to experimental and control group and the expected differences between the groups(outcome variables) are studied. It helps to determine whether the exercise program will decrease the coronary heart disease incidence rate. The RCT type of study will reduce bias and statistically efficient for research studies.