Department of Quantitative Health Sciences, Outcomes Measurement Science
Clinical Epidemiology | Epidemiology | Health Services Research | Neoplasms | Statistics and Probability
OBJECTIVE: The European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30 health-related quality of life questionnaire is one of the most widely used cancer-specific health-related quality of life questionnaires worldwide. General population norm data can facilitate the interpretation of QLQ-C30 data obtained from cancer patients. This study aimed at systematically collecting norm data from the general population to develop European QLQ-C30 norm scores and to generate comparable norm data for individual countries in Europe and North America.
METHODS: We collected QLQ-C30 data from the general population across 11 European Union (EU) countries, Russia, Turkey, Canada and United States (n > /= 1000/country). Representative samples were stratified by sex and age groups (18-39, 40-49, 50-59, 60-69 and > /= 70 years). After applying weights based on the United Nations population distribution statistics, we calculated QLQ-C30 domain scores to generate a 'European QLQ-C30 Norm' based on the EU countries. Further, we calculated QLQ-C30 norm scores for all 15 individual countries.
RESULTS: A total of 15,386 respondents completed the online survey. For the EU sample, most QLQ-C30 domains showed differences by sex/age, with men scoring somewhat better health than women, while age effects varied across domains. Substantially larger differences were seen in inter-country comparisons, with Austrian and Dutch respondents reporting consistently better health compared with British and Polish respondents.
CONCLUSIONS: This study is the first to systematically collect EORTC QLQ-C30 general population norm data across Europe and North America applying a consistent data collection method across 15 countries. These new norm data facilitate valid intra-country as well as inter-country comparisons and QLQ-C30 score interpretation.
Canada, EORTC QLQ-C30, Europe, General population, Quality of life, US, norm data, normative data, patient-reported outcomes, self-report, survey
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Copyright 2018 The Authors. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
DOI of Published Version
Eur J Cancer. 2019 Jan;107:153-163. doi: 10.1016/j.ejca.2018.11.024. Epub 2018 Dec 19. Link to article on publisher's site
European journal of cancer (Oxford, England : 1990)
Nolte, S.; Liegl, G.; Petersen, M. A.; Aaronson, N. K.; Costantini, A.; Fayers, P. M.; Groenvold, M.; Holzner, B.; Johnson, C. D.; Kemmler, G; Tomaszewski, K. A.; Waldmann, A.; Young, T. E.; and Rose, Matthias S. F., "General population normative data for the EORTC QLQ-C30 health-related quality of life questionnaire based on 15,386 persons across 13 European countries, Canada and the Unites States" (2019). Open Access Articles. 3701.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.