The methods by which the participants can understand that the trial is for experimental purpose, and it is not directly intended to help the patient. Introduction: Research is designed to analyze the effect of a particular condition or substance on a population. In the research, the people are mainly divided into two groups, one of the groups is provided with the condition that is according to experimental purpose, and the other group is used as a control. The grouping is highly randomized, and the researcher must be unbiased in selecting the group.

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Chapter 24, Problem 1CS

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To determine: The methods by which the participants can understand that the trial is for experimental purpose, and it is not directly intended to help the patient.

Introduction: Research is designed to analyze the effect of a particular condition or substance on a population. In the research, the people are mainly divided into two groups, one of the groups is provided with the condition that is according to experimental purpose, and the other group is used as a control. The grouping is highly randomized, and the researcher must be unbiased in selecting the group.

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