Royal College of Surgeons in Ireland
Reliability and Validity of the Arabic Version of the....pdf (288.94 kB)

Reliability and validity of the Arabic version of the EORTC QLQ-C30 and QLQ-BR23 questionnaires

Download (288.94 kB)
Version 2 2022-07-19, 14:42
Version 1 2021-12-08, 18:06
journal contribution
posted on 2022-07-19, 14:42 authored by Ghufran JassimGhufran Jassim, Ahmed AlAnsari

Materials and methods: A cross-sectional study was carried out. A total of 337 subjects were recruited from the Oncology Centre in Bahrain and 239 consented to participation. The European Organization for Research and Treatment-QOL questionnaire and breast cancer-specific module (EORTC QLQ-C30 and QLQ-BR23) were used to measure the HRQOL among women with breast cancer. All statistical tests were performed using SPSS Version 20. The reliability of the EORTC QLQ-C30 and QLQ-BR23 questionnaires was examined using Cronbach's alpha test. The construct validity of both questionnaires was tested using the exploratory factor analysis.

Results: Exploratory factor analysis results of EORTC QLQ-C30 showed that Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy was 0.878 and Bartlett's Test of Sphericity is <0.001. The extracted four-factor model explained 51.52% of the total variance. Relating to EORTC-QLQ-BR23, the KMO value was 0.735 and Bartlett's Test of Sphericity showed a significance of p<0.001 and extracted a three-factor model which explained a total variance of 46.05%. The Cronbach's alpha coefficient results for EORTC QLQ-C30 and QLQ BR-23 were 0.927and 0.844 respectively which reflects high internal consistency.

Conclusion: The EORTC QLQ-C30 and QLQ-BR23 questionnaires are feasible and promising instruments to measure the levels of HRQOL among Arabic-speaking women with breast cancer in future studies with some suggested modifications in some of the domains or items



The original article is available at

Published Citation

Jassim G, AlAnsari A. Reliability and validity of the Arabic version of the EORTC QLQ-C30 and QLQ-BR23 questionnaires. Neuropsychiatr Dis Treat. 2020;16:3045-3052.

Publication Date

11 December 2020

PubMed ID



  • RCSI Bahrain


Dove Press Ltd


  • Published Version (Version of Record)