About the EORTC QLQ-C30

The EORTC QLG Core Questionnaire (EORTC QLQ-C30) is a 30 item instrument meant to assess some of the different aspects that define the quality of life of cancer patients.

It was the first instrument to be developed by the EORTC QLG and it is the product of more than a decade of collaborative research.

Following its general release in 1993, the QLQ-C30 has been used in a wide range of cancer clinical trials, by a large number of research groups; it has additionally been used in various other, non-trial studies.