![](/images/graphics-bg.png)
Reliability and Validity of the Greek QLQ-C30 and QLQ-MY20 for Measuring Quality of Life in Patients with Multiple Myeloma
Joint Authors
Samartzis, Alexandros
Niakas, Dimitris
Kontodimopoulos, Nick
Papadopoulos, Angelos A.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-02
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
Objectives.
The aim of this study was to assess the psychometric properties of the Greek EORTC QLQ-C30 and QLQ-MY20 instruments.
Method.
A sample of myeloma patients (N=89) from two tertiary hospitals were surveyed with the QLQ-C30, QLQ-MY20 and various demographic and disease related questions.
The previously validated Greek SF-36 instrument was used as a “gold standard” for health-related quality of life (HRQoL) comparisons.
Hypothesized scale structure, internal consistency reliability (Cronbach's alpha) and various forms of construct validity (convergent, discriminative, concurrent and known-groups) were assessed.
Results.
Multitrait scaling confirmed scale structure of the QLQ-C30 and QLQ-MY20, with good item convergence (96% and 72%) and discrimination (78% and 58%) rates.
Cronbach's α was >0.70 for all but one scale (cognitive functioning).
Spearman's correlations between similar QLQ-C30 and SF-36 scales ranged between 0.35–0.80 (P<0.001).
Expected interscale correlations and known-groups comparisons supported construct validity.
QLQ-MY20 scales showed comparatively lower correlations with QLQ-C30 functional scales, and higher correlations with conceptually related symptom scales.
Conclusions.
The observed psychometric properties of the two instruments imply suitability for assessing myeloma HRQoL in Greece.
Future studies should focus on generalizability of the results, as well as on specific issues such as longitudinal validity and responsiveness.
American Psychological Association (APA)
Kontodimopoulos, Nick& Samartzis, Alexandros& Papadopoulos, Angelos A.& Niakas, Dimitris. 2012. Reliability and Validity of the Greek QLQ-C30 and QLQ-MY20 for Measuring Quality of Life in Patients with Multiple Myeloma. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-502657
Modern Language Association (MLA)
Kontodimopoulos, Nick…[et al.]. Reliability and Validity of the Greek QLQ-C30 and QLQ-MY20 for Measuring Quality of Life in Patients with Multiple Myeloma. The Scientific World Journal No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-502657
American Medical Association (AMA)
Kontodimopoulos, Nick& Samartzis, Alexandros& Papadopoulos, Angelos A.& Niakas, Dimitris. Reliability and Validity of the Greek QLQ-C30 and QLQ-MY20 for Measuring Quality of Life in Patients with Multiple Myeloma. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-502657
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-502657