Establishing anchor-based minimally important differences for the EORTC QLQ-C30 in glioma patients.

EORTC QLQ-C30 brain tumor clinical relevance health-related quality of life (HRQOL) minimally important difference (MID)

Journal

Neuro-oncology
ISSN: 1523-5866
Titre abrégé: Neuro Oncol
Pays: England
ID NLM: 100887420

Informations de publication

Date de publication:
02 08 2021
Historique:
pubmed: 19 2 2021
medline: 7 8 2021
entrez: 18 2 2021
Statut: ppublish

Résumé

Minimally important differences (MIDs) allow interpretation of the clinical relevance of health-related quality of life (HRQOL) results. This study aimed to estimate MIDs for all European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core 30 (QLQ-C30) scales for interpreting group-level results in brain tumor patients. Clinical and HRQOL data from three glioma trials were used. Clinical anchors were selected for each EORTC QLQ-C30 scale, based on correlation (>0.30) and clinical plausibility of association. Changes in both HRQOL and the anchors were calculated, and for each scale and time period, patients were categorized into one of the three clinical change groups: deteriorated by one anchor category, no change, or improved by one anchor category. Mean change method and linear regression were applied to estimate MIDs for interpreting within-group change and between-group differences in change over time, respectively. Distribution-based methods were applied to generate supportive evidence. A total of 1687 patients were enrolled in the three trials. The retained anchors were performance status and eight Common Terminology Criteria for Adverse Events (CTCAE) scales. MIDs for interpreting within-group change ranged from 4 to 12 points for improvement and -4 to -14 points for deterioration. MIDs for between-group difference in change ranged from 4 to 9 for improvement and -4 to -16 for deterioration. Most anchor-based MIDs were closest to the 0.3 SD distribution-based estimates (range: 3-10). MIDs for the EORTC QLQ-C30 scales generally ranged between 4 and 11 points for both within-group mean change and between-group mean difference in change. These results can be used to interpret QLQ-C30 results from glioma trials.

Sections du résumé

BACKGROUND
Minimally important differences (MIDs) allow interpretation of the clinical relevance of health-related quality of life (HRQOL) results. This study aimed to estimate MIDs for all European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core 30 (QLQ-C30) scales for interpreting group-level results in brain tumor patients.
METHODS
Clinical and HRQOL data from three glioma trials were used. Clinical anchors were selected for each EORTC QLQ-C30 scale, based on correlation (>0.30) and clinical plausibility of association. Changes in both HRQOL and the anchors were calculated, and for each scale and time period, patients were categorized into one of the three clinical change groups: deteriorated by one anchor category, no change, or improved by one anchor category. Mean change method and linear regression were applied to estimate MIDs for interpreting within-group change and between-group differences in change over time, respectively. Distribution-based methods were applied to generate supportive evidence.
RESULTS
A total of 1687 patients were enrolled in the three trials. The retained anchors were performance status and eight Common Terminology Criteria for Adverse Events (CTCAE) scales. MIDs for interpreting within-group change ranged from 4 to 12 points for improvement and -4 to -14 points for deterioration. MIDs for between-group difference in change ranged from 4 to 9 for improvement and -4 to -16 for deterioration. Most anchor-based MIDs were closest to the 0.3 SD distribution-based estimates (range: 3-10).
CONCLUSIONS
MIDs for the EORTC QLQ-C30 scales generally ranged between 4 and 11 points for both within-group mean change and between-group mean difference in change. These results can be used to interpret QLQ-C30 results from glioma trials.

Identifiants

pubmed: 33598685
pii: 6142946
doi: 10.1093/neuonc/noab037
pmc: PMC8328025
doi:

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

1327-1336

Subventions

Organisme : EORTC Quality of Life Group
ID : 006/2014

Commentaires et corrections

Type : CommentIn

Informations de copyright

© The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Neuro-Oncology.

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Auteurs

Linda Dirven (L)

Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands.
Department of Neurology, Haaglanden Medical Center, The Hague, the Netherlands.

Jammbe Z Musoro (JZ)

European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium.

Corneel Coens (C)

European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium.

Jaap C Reijneveld (JC)

Department of Neurology & Brain Tumor Center, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, the Netherlands.

Martin J B Taphoorn (MJB)

Department of Neurology, Leiden University Medical Center, Leiden, the Netherlands.
Department of Neurology, Haaglanden Medical Center, The Hague, the Netherlands.

Florien W Boele (FW)

Leeds Institute of Medical Research at St James's, St James's University Hospital, Leeds, UK.
Faculty of Medicine and Health, Leeds Institute of Health Sciences, University of Leeds, Leeds, UK.

Mogens Groenvold (M)

Leeds Institute of Medical Research at St James's, St James's University Hospital, Leeds, UK.
Departments of Public Health and Palliative Medicine, University of Copenhagen and Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark.

Martin J van den Bent (MJ)

Brain Tumor Center, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.

Roger Stupp (R)

Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.

Galina Velikova (G)

Leeds Institute of Medical Research at St James's, St James's University Hospital, Leeds, UK.

Kim Cocks (K)

Adelphi Values, Bollington, Cheshire, UK.

Mirjam A G Sprangers (MAG)

Department of Medical Psychology, Cancer Center Amsterdam, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands.

Madeleine T King (MT)

Faculty of Science, School of Psychology, University of Sydney, Sydney, NSW, Australia.

Hans-Henning Flechtner (HH)

Clinic for Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Magdeburg, Germany.

Andrew Bottomley (A)

European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium.

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