Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11136-004-4782-z
Title: The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30): Validation of English version in Singapore
Authors: Luo, N. 
Fones, C.S.L.
Lim, S.E.
Xie, F.
Thumboo, J.
Li, S.C. 
Keywords: Cancer
EORTC QLQ-C30
Quality of life
Singapore
Issue Date: May-2005
Source: Luo, N., Fones, C.S.L., Lim, S.E., Xie, F., Thumboo, J., Li, S.C. (2005-05). The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30): Validation of English version in Singapore. Quality of Life Research 14 (4) : 1181-1186. ScholarBank@NUS Repository. https://doi.org/10.1007/s11136-004-4782-z
Abstract: Objective: This study aimed to validate the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30, English version 3.0) in Singaporean cancer patients. Methods: In a cross-sectional study, a heterogeneous sample of cancer patients (n = 57) self-administered a questionnaire containing the QLQ-C30, the Short Form 36 Health Survey (SF-36) and assessing health and sociodemographic status. Construct validity was assessed by testing a priori hypotheses that QLQ-C30 scales would be moderately or strongly correlated with SF-36 scales measuring similar dimensions of health-related quality of life (HRQoL) and that subjects reporting mild symptoms would have better HRQoL scores than those reporting severe symptoms. Internal consistency reliability was assessed using Cronbach's α. Results: Strength of Spearman's correlations between the QLQ-C30 and SF-36 scales assessing similar dimensions of HRQoL ranged from 0.35 to 0.67. Subjects with mild symptoms had better scores than those with severe symptoms for all six QLQ-C30 HRQoL scales (p < 0.05 for five scales, Mann-Whitney U tests). Cronbach's α ranged from 0.19 for the cognitive functioning scale to 0.91 for the global QoL scale. Conclusion: This study provides preliminary evidence for the validity and reliability of the EORTC QLQ-C30 in English-speaking Singaporean cancer patients. © Springer 2005.
Source Title: Quality of Life Research
URI: http://scholarbank.nus.edu.sg/handle/10635/53220
ISSN: 09629343
DOI: 10.1007/s11136-004-4782-z
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