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Authors
Petersen, Morten Aagaard https://orcid.org/0000-0002-3117-632X
Vachon, Hugo
Giesinger, Johannes M.
Groenvold, Mogens
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Funding
Funding for this research was provided by:
European Organisation for Research and Treatment of Cancer (QLG grant no. 003/2017)
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Article History
Received: 23 May 2025
Accepted: 24 November 2025
First Online: 23 December 2025
Declarations
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: The present study is based on secondary analyses of data collected between 2008 and 2018 as part of the development and validation of the EORTC CAT Core instrument. Local ethics committees of the participating countries approved data collection and written informed consent was obtained before study participation. All procedures performed involving human participants were in accordance with the local ethical standards and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Data from the validation study was approved by the Danish Data Protection Agency, Ref. No.: 2012-58-0004. Data from the original collections may be available from the EORTC upon reasonable request.
: The authors have no conflict of interest, specifically the authors do not have any financial interests that are directly or indirectly related to the results of this work. The EORTC CAT Core and any CAT based on this are copyrighted, with all rights reserved by the EORTC Quality of Life Group. Academic use of EORTC instruments requires no fee. For commercial use the EORTC requests a compensation fee.
