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Cohort studies7/4/2023 ![]() people put into groups based on certain shared traits-there is an inherent lack of randomization. Potential for biases: Even the most well-designed cohort studies won't achieve results as robust as those reached via randomized controlled trials.Behavior alteration: Another weakness of cohort studies is that participants may alter their behavior in ways they wouldn't otherwise if they were not part of a study, which could alter the results of the research.Though they have every right to do that, having too many people leave the study could potentially increase the risk of bias. ![]()
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