• Shafika A Alawadhi and Jude U Ohaeri.
• Department of Psychiatry, Psychological Medicine Hospital, Safat, Kuwait.
• Ann Saudi Med. 2010 Sep 1; 30 (5): 390396390-6.

Background And ObjectivesAlthough the EORTC QLQ-C30 and its breast-specific module (BR-23) are widely used instruments, the few reports on their psychometric characteristics from Arab and neighboring countries involved limited analyses. Our objective was to assess the psychometric characteristics of both questionnaires using the responses of a larger sample of Arab women.MethodsParticipants were consecutive clinic attendees at the Kuwait Cancer Control Center. The indices assessed were alpha coefficients, item-internal consistency (IIC), item-discriminant validity (IDV), and known-groups validity.ResultsThe 348 women were aged 48.3 (10.3) years. The intra-class correlation for the test-retest statistic and the internal consistency values for the multi-item scales were >0.7 alpha. With the exception of the pain subscale, all items met the IIC criterion of >0.4 correlation with the corresponding scale. For IDV, the BR-23 performed better than the QLQ-C30. The scale scores discriminated between patients at different disease stages, and between sick and well populations.ConclusionWith the exception of the pain subscale, the Arabic version of the questionnaires is psychometrically sound.

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