Comorbidity — What It Means in Clinical Trials
Plain English Definition
A comorbidity is a medical condition you have in addition to the one being studied. For example, if a trial is for lung cancer and you also have diabetes, diabetes is a comorbidity. Trials often list specific comorbidities that could disqualify you, usually because they might make the treatment riskier or complicate the results.
Why It Matters
Be honest about all your health conditions when screening for a trial. Hiding a comorbidity could put your safety at risk and invalidate the study results.
Example
A listing might say: "Exclusion: uncontrolled hypertension, active hepatitis B or C, or history of organ transplant." These are comorbidities that would prevent participation.
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