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Multicenter Study
. 2017 Jul;8(4):271-276.
doi: 10.1016/j.jgo.2017.03.001. Epub 2017 Apr 1.

Cross-cultural Application of the Korean Version of the EORTC QLQ-ELD14 Questionnaire for Elderly Patients With Cancer

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Multicenter Study

Cross-cultural Application of the Korean Version of the EORTC QLQ-ELD14 Questionnaire for Elderly Patients With Cancer

Ae Jin Goo et al. J Geriatr Oncol. .

Abstract

Objectives: The European Organization for Research and Treatment of Cancer (EORTC) QLQ-ELD14 is a validated tool that measures Health-related Quality-of-life (HRQOL) for elderly patients with cancer. This study was conducted to evaluate the psychometric properties of the Korean version of the EORTC QLQ-ELD14 to determine if this tool can be used to evaluate HRQOL for older Korean patients with cancer.

Materials and methods: We recruited 439 elderly patients with cancer aged ≥60years from 11 cancer centers and completed the EORTC QLQ-ELD14 questionnaires. The reliability and validity of the EORTC QLQ-ELD14 questionnaire were assessed via Cronbach alpha, multitrait scaling analyses, correlation analyses with the EORTC QLQ-C30, and known-group comparisons. Known-group comparisons were conducted by dividing the patients into groups based on the cancer stage, depression level, and loss of mobility.

Results: The scale structure of the Korean version of the EORTC QLQ-ELD14 was consistent with the originally hypothesized scale structure. Cronbach alpha coefficients ranged 0.65-0.88. Multitrait scaling analysis showed good item convergent and discriminant validity. Low scaling errors (3.1%) were observed. Divergent validity was demonstrated by no strong correlation with the EORTC QLQ C30. The clinical validity of the Korean version of the EORTC QLQ-ELD14 was demonstrated by its ability to discriminate among patient subgroups categorized by AJCC stage, depression level, and loss of mobility.

Conclusion: Our findings indicate that the Korean version of the EORTC QLQ-ELD14 questionnaire is reliable and valid for measuring QOL of older Korean patients with cancer.

Keywords: Cancer; EORTC-QLQ-ELD14; Elderly; Korean; Oncology; Validation.

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