Meaningful change in oncology quality-of-life instruments: A systematic literature review

Gillian Bedard, Liang Zeng, Henry Lam, David Cella, Liying Zhang, Natalie Lauzon, Edward Chow*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

13 Scopus citations

Abstract

Quality of life (QoL) is increasingly being recognized as an important end point in oncology clinical trials. The purpose of this study was to review the literature on what constitutes a meaningful change in oncology QoL instruments. A literature search was conducted in Medline, Embase, Cochrane Central Register of Controlled Trials and Cochrane Database of Systematic Reviews. Articles determining clinically meaningful change were selected. Twenty six publications were identified. Common anchors included performance status, global rating of change and overall QoL. The distribution approach utilized standard deviations and standard error of measurement. Limitations included optimism bias and a change in patients' internal frame of reference. Currently, there is an inconsistency between meaningful change studies. Analyses should be conducted in population-specific samples, as meaningful change varies depending on patient characteristics. Consistently, meaningful change for improvement has been smaller than that for deterioration, suggesting that patients are more responsive to improvement.

Original languageEnglish (US)
Pages (from-to)475-483
Number of pages9
JournalExpert Review of Pharmacoeconomics and Outcomes Research
Volume12
Issue number4
DOIs
StatePublished - Aug 2012

Keywords

  • meaningful change
  • oncology
  • quality of life

ASJC Scopus subject areas

  • Health Policy
  • Pharmacology (medical)

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