Double-Blind Study/Trial
Double-Blind Study/Trial : Persons testing a new therapy for safety and effectiveness can be influenced by their preconceived ideas or desires. Similarly, patients often report improvement from treatments if they expect the treatment to work, a phenomenon known as the placebo effect. To prevent these biases from influencing results, controlled trials often use codes that hide knowledge of which treatment is being given from both the investigator and the patient until after the study is complete
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