They are specific requirements – inclusion and exclusion factors – that define who can participate in a study, ensuring participant safety and scientific validity. These criteria cover age, health status, medical history, and disease stage to select an appropriate study population. They are crucial for optimizing, gathering reliable, and meaningful findings.
Key components of Eligibility Criteria
- Inclusion Criteria: The predefined characteristics that potential participants must have to be part of the trial, such as age, gender, specific disease, or stage of disease.
- Exclusion Criteria: The characteristics that disqualify potential participants from the study, such as specific comorbidities, medications, or pregnancy, which could make participation unsafe or complicate the results.
- NIH Toolkit for Patient focused therapy development https://toolkit.ncats.nih.gov


