Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Psychometric Validation of the Bahasa Malaysia Version of the EORTC QLQ-CR29

  • Magaji, Bello Arkilla (Julius Centre University of Malaya, Department of Social & Preventive Medicine, Faculty of Medicine) ;
  • Moy, Foong Ming (Julius Centre University of Malaya, Department of Social & Preventive Medicine, Faculty of Medicine) ;
  • Roslani, April Camilla (Department of Surgery, Faculty of Medicine, University of Malaya) ;
  • Law, Chee Wei (Department of Surgery, Faculty of Medicine, University of Malaya) ;
  • Raduan, Farhana (Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre) ;
  • Sagap, Ismail (Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre)
  • Published : 2016.01.11
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Abstract

Background: This study examined the psychometric properties of the Bahasa Malaysia (BM) version of the European Organization for Research and Treatment of Cancer (EORTC) Colorectal Cancer-specific Quality Of Life Questionnaire (QLQ-CR29). Materials and Methods: We studied 93 patients recruited from University Malaya and Universiti Kebangsaan Medical Centers, Kuala Lumpur, Malaysia using a self-administered method. Tools included QLQ-C30, QLQ-CR29 and Karnofsky Performance Scales (KPS). Statistical analyses included Cronbach's alpha, test-retest correlations, multi-traits scaling and known-groups comparisons. A p vaue ${\leq}0.05$ was considered significant. Results: The internal consistency coefficients for body image, urinary frequency, blood and mucus and stool frequency scales were acceptable (Cronbach's alpha ${\alpha}{\geq}0.65$). However, the coefficients were low for the blood and mucus and stool frequency scales in patients with a stoma bag (${\alpha}=0.46$). Test-retest correlation coefficients were moderate to high (range: r = 0.51 to 1.00) for most of the scales except anxiety, urinary frequency, buttock pain, hair loss, stoma care related problems, and dyspareunia (r ${\leq}0.49$). Convergent and discriminant validities were achieved in all scales. Patients with a stoma reported significantly higher symptoms of blood and mucus in the stool, flatulence, faecal incontinence, sore skin, and embarrassment due to the frequent need to change the stoma bag (p < 0.05) compared to patients without stoma. None of the scales distinguished between patients based on the KPS scores. There were no overlaps between scales in the QLQ-C30 and QLQ-CR29 (r < 0.40). Conclusions: the BM version of the QLQ-CR29 indicated acceptable psychometric properties in most of the scales similar to original validation study. This questionnaire could be used to complement the QLQ-C30 in assessing HRQOL among BM speaking population with colorectal cancer.

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References

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