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Glossary


Definitions of complex medical terms on the Clinical Trials Quebec site.

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Cohort
A cohort is a group of participants who share a medical condition and/or certain characteristics (such as an age group or a risk factor) and who receive the same health product as part of a clinical trial.  A single clinical trial may include several cohorts, for example: 
  • One cohort receiving the investigational health product.
  • One cohort receiving a placebo or standard treatment.
By comparing results across these groups, the research team can evaluate the safety and effectiveness of the health product being tested. 

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