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faculteit: "UvA" en publicatiejaar: "2008"
| Auteurs||H. Jayasekara, L.C. Rajapaksa, N.K. Aaronson|
|Titel||Quality of life in cancer patients in South Asia:Psychometric properties of the Sinhala version of the EORTC QLQ-C30 in cancer patients with heterogeneous diagnoses|
|Tijdschrift||Quality of Life Research|
|Samenvatting||Background The European Organisation for Research and Treatment of Cancer Quality of Life Core Questionnaire (EORTC QLQ-C30) was evaluated for its psychometric properties in a sample of cancer patients from the culturally distinct South Asian subcontinent, which accounts for a significant proportion of the global cancer burden.
Methods Psychometric testing assessed the hypothesised scale structure, internal consistency, content and construct validity, and acceptability of the Sinhala version of the
QLQ-C30 independently in two heterogeneous groups of cancer patients at pretreatment (N = 489) and during treatment (N = 343).
Results Qualitative feedback from an expert panel assessing content validity recommended measuring family support during illness as an additional, culturally-relevant
dimension of health-related quality of life (HRQL). Compliance was high (100%), with little missing data (0.11%). Multitrait scaling results supported the scale structure of the QLQ-C30, with the exception of the cognitive functioning scale, which was also the only scale that did not meet the 0.70 internal consistency criteria in either sample.
Interscale correlations were of a moderate size, with conceptually related scales showing higher correlations. All scales were able to discriminate clearly between pre- and current treatment patients (P\0.01), although results were less consistent when comparing groups formed on the basis of age and disease stage.
Conclusions Overall psychometric results confirmed the QLQ-C30 as a reliable and valid questionnaire for assessing HRQL of cancer patients in Sri Lanka.|
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