A study claims that the combination of vitamin C with vitamin E is more effectiv

Question

A study claims that the combination of vitamin C with vitamin E is more effective for alone. In the study, a group of researchers studied 1132 subjects. The subjects were randomly assigned to out of three study groups. The first group of 310 subjects were instructed to take 600 mg daily of vitamin C. The second group of 418 subjects were instructed to take 600 mg of vitamin C and 200 IU of vitamin E daily. The third group of 404 subjects were instructed to take 600 mg of vitamin C and 400 IU of vitamin E daily. The incidence of flu over a season was recorded. All subjects knew which treatment they were receiving. preventing the flu than vitamin C In this study, which is the control group? the second group of 418 taking 200 IU of vitamin E the third group of 404 taking 400 IU of vitamin E the 1132 subjects the first group of 310 taking vitamin C alone There is no control group. This study is blind, but not double-blind not an experiment not blind double-blind none of the above

Explanation / Answer

1)

The control group is

the first group of 310 taking vitamin C alone

2)

This is a study related according the problem is

Not blind

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