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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Grado de comprobación científica

Levels of evidence (LEH-vulz uv EH-vih-dents)
A ranking system used to describe the strength of the results measured in a clinical trial or research study. The design of the study (such as a case report for an individual patient or a randomized double-blinded controlled clinical trial) and the endpoints measured (such as survival or quality of life) affect the strength of the evidence.



 
 
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.