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To avoid bias in a clinical trial, researchers often use randomization to assign participants to different treatment groups, ensuring that each participant has an equal chance of being placed in any group. Blinding, where participants and/or researchers are unaware of group assignments, helps prevent expectations from influencing outcomes. Additionally, using a control group allows for comparisons that can highlight the true effects of the treatment being tested. These methods work together to enhance the validity and reliability of the trial's results.

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