ArticleQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation2026
Cancer-specific or generic preference-based measures in oncology? A validity comparison across six commonly diagnosed cancers.
Article in Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Abstract
objectivesThis study aimed to evaluate the validity of both generic and cancer-specific preference-based measures (PBMs) in patients undergoing cancer treatment, providing solid evidence for the optimal selection and implementation of these PBMs in oncology clinical practice settings.
methodsA cross-sectional survey was conducted among patients diagnosed with one of the six most common cancers in China, recruited from hospitals in Harbin, China, between August 2022 and December 2023. Participants completed two generic PBMs (EQ-5D-5L and SF-6Dv2) and two cancer-specific PBMs (Quality of Life Utility-Core 10 Dimension [QLU-C10D] and Functional Assessment of Cancer Therapy Eight Dimension [FACT-8D]). Convergent validity was assessed using pairwise polychoric correlations between the four measures. Known-groups validity was evaluated by examining the measures’ ability to discriminate between patients based on cancer stage, with effect sizes (ES) calculated. Agreement between the utility scores of the four measures was assessed using intraclass correlation coefficients (ICC).
resultsA total of 827 cancer patients completed the survey, including 270 with lung cancer, 96 with stomach cancer, 88 with liver cancer, 71 with oesophageal cancer, 142 with colorectal cancer, and 160 with breast cancer. The proportions in full health were 25.8%, 13.7%, 7.3%, and 2.4% for EQ-5D-5L, SF-6Dv2, QLU-C10D, and FACT-8D, respectively. Convergent validity analysis revealed that the symptom dimensions of cancer-specific PBMs had lower correlations with generic PBMs compared to their functional dimensions. Known-groups validity showed QLU-C10D was most effective in distinguishing cancer stages (highest ES across subgroups), whereas EQ-5D-5L performed poorest (ES = 0.33); SF-6Dv2 was most sensitive to ECOG differences (ES = 1.37), with all instruments robust for ECOG stratification. Agreement results indicated that the agreement between generic PBMs and cancer-specific PBMs was the lowest, compared to the agreement within each category.
conclusionsCancer-specific PBMs captured stage- and symptom-related burden more comprehensively, whereas generic PBMs were more informative for functional status and cross-cancer comparability. These findings underline the importance of balancing cancer-specific and generic PBMs through purpose- and site-specific combinations to optimize utility assessment and support decision-making in oncology.
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