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- (BY-us) In a scientific research study or clinical trial, a flaw in the study design or the method of collecting or interpreting information. Biases can lead to incorrect conclusions about what the study or clinical trial showed.
National Cancer Institute - Cite This Source - This Definition
- action study, agent study, chemoprevention study, clinical study, clinical trial, cohort, diagnostic trial, investigator, multicenter study, NCI clinical trials cooperative group, single blind study, study agent, t test, unconventional cancer treatments