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EORTIC Quality of Life Questionnaire

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EORTIC Quality of Life Questionnaire

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About Scale Name

Scale Name

EORTIC Quality of Life Questionnaire

Author Details

Paul de Graeff, Dr. Paul A.J. van Dam, Dr. John J.M. de Haes, Dr. Jan M.J. Visser, Dr. Theo J.A.M. Coebergh, Dr. E.J.P. van der Velden

Translation Availability

Not Sure

EORTIC Quality of Life Questionnaire
EORTIC Quality of Life Questionnaire

Background/Description

The EORTC Quality of Life Questionnaire (EORTC QLQ-C30) is a 30-item questionnaire that is used to measure the quality of life of cancer patients. It was developed by the European Organization for Research and Treatment of Cancer (EORTC) in the early 1980s.

The background of the EORTC QLQ-C30 can be traced back to the 1970s, when there was a growing awareness of the importance of quality of life in cancer care. At the time, most clinical trials focused on the efficacy of cancer treatments, but there was little attention paid to the impact of these treatments on the quality of life of patients.

The EORTC QLQ-C30 was developed in response to this need for a tool to measure the quality of life of cancer patients. The goal of the questionnaire was to provide a comprehensive assessment of the physical, psychological, and social dimensions of quality of life.

The EORTC QLQ-C30 was first published in 1986 and has since been translated into over 100 languages. It is one of the most widely used quality of life questionnaires in the world and is used in clinical trials, research studies, and clinical practice.

The EORTC QLQ-C30 is a self-report questionnaire that can be completed by patients in about 15 minutes. It is scored on a 0-100 scale, with 100 representing the best possible quality of life and 0 representing the worst possible quality of life.

The EORTC QLQ-C30 is composed of 5 multi-item scales:

  • Physical functioning
  • Role functioning
  • Social functioning
  • Emotional functioning
  • Cognitive functioning

In addition to the 5 multi-item scales, there are also 9 single items that assess specific aspects of quality of life, such as pain, fatigue, appetite loss, nausea/vomiting, diarrhea, constipation, sleep disturbance, and financial impact.

The EORTC QLQ-C30 is a valuable tool for tracking the quality of life of cancer patients and assessing the impact of cancer treatment on their lives. It has helped to improve our understanding of the challenges that cancer patients face and has led to the development of new interventions to improve their quality of life.

Administration, Scoring and Interpretation

  • Review the instructions for administering the questionnaire.
  • Provide the patient with a copy of the questionnaire.
  • Explain the purpose of the questionnaire and how to complete it.
  • Answer any questions that the patient may have about the questionnaire.
  • Collect the completed questionnaire.
  • Score the questionnaire.
  • Interpret the results of the questionnaire.

Reliability and Validity

Reliability refers to the consistency of the questionnaire. If the questionnaire is reliable, then the results should be consistent over time and across different patients. The EORTC QLQ-C30 has been shown to be reliable in a number of studies. For example, one study found that the test-retest reliability of the EORTC QLQ-C30 was 0.85. This means that the scores on the questionnaire were consistent over a two-week period.

Validity refers to the accuracy of the questionnaire. If the questionnaire is valid, then it should measure what it is supposed to measure. The EORTC QLQ-C30 has been shown to be valid in a number of studies. For example, one study found that the EORTC QLQ-C30 was correlated with other measures of quality of life, such as the Karnofsky Performance Status Scale. This suggests that the EORTC QLQ-C30 is measuring the same thing as these other measures.

Available Versions

30-Items

Reference

Aaronson, N. K., Ahmedzai, S., Bergman, B., et al. (1993). The European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire (QLQ-C30): a preliminary report on its development and validation. Journal of Clinical Oncology. 11, 460–471.

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Important Link

Scale File:

Frequently Asked Questions

What is the EORTC QLQ-C30?
It is a 30-item questionnaire that measures the quality of life of cancer patients.

How long does it take to complete the EORTC QLQ-C30?
It takes about 15 minutes to complete the EORTC QLQ-C30.

What is the score range for the EORTC QLQ-C30?
The score range for the EORTC QLQ-C30 is 0-100, with 100 representing the best possible quality of life and 0 representing the worst possible quality of life.

Where can I find the EORTC QLQ-C30?
The EORTC QLQ-C30 is available on the EORTC website (https://qol.eortc.org/).

Who can use the EORTC QLQ-C30?
The EORTC QLQ-C30 can be used by cancer patients, healthcare professionals, and researchers.

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