31-10-2017
Health

contestada

Which 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?
Question 10 options:

Case control

Double blind

Clinical trial

Epidemiological

Respuesta :

ashleypeters510 ashleypeters510

14-04-2020

Answer:

Double Blind.

Explanation:

i took the test

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