RESEARCH METHODS-QUALITATIVE STUDY DESIGNS-BASING ON NATURE OF THE INVESTIGATION- BLIND STUDIES

The concept of a blind study can be used with comparable and placebo experimental designs and is applied to studies measuring the effectiveness of a drug. In a blind study, the study population does not know whether it is getting real or fake treatment or which treatment modality. The main objective of designing a blind study is to isolate the placebo effect.

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