Which type of research study is set up so that neither subjects nor investigators know which is the active group and which is re ceiving a placebo? Question 10 options:
Case control
Double blind
Clinical trial
Epidemiological
2 answers:
Answer:
Double Blind.
Explanation:
i took the test
Double blind is the type of research study is set up so that neither subjects nor investigators know which is the active group and which is receiving a placebo.
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