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In what study design are subjects randomly assigned to different treatment groups?

Adaptive Design

Crossover Design

Randomized Design

A randomized design is characterized by the random assignment of subjects to different treatment groups. This method ensures that each participant has an equal chance of being placed in any group, which helps to minimize bias and confounding variables. By distributing participants randomly, researchers aim to create comparable groups at the start of the study, thus enhancing the validity of the results.

In contrast, an adaptive design involves adjustments to the trial procedures based on interim results, while a crossover design allows participants to receive multiple treatments in a sequential manner but also does not inherently involve random assignment at the start. Database design is unrelated to clinical research study designs and instead pertains to the organization and structure of data within database management systems.

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Database Design

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