Cross-cultural adaptation and validation of the Arabic version of McGill quality of life: revised questionnaire in the patients with cancer

Abstract

Purpose

The aims of this study were to translate and culturally adapt the McGill Quality of Life Questionnaire-revised (MQOL-R) to modern standard Arabic and to examine its reliability, construct, and discriminative validity in Arab patients with cancer.

Materials and methods

Translation and cultural adaptation of the English MQOL-R to modern standard Arabic were performed according to international guidelines. For psychometric evaluation, 125 participants with cancer were selected and completed the MQOL-R along with Global Health Status/QoL and functional subscales of European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30), and Eastern Cooperative Oncology Group performance status rating (ECOG-PS). The MQOL-R was tested for internal consistency, test-retest reliability, and construct validity.

Results

The Arabic MQOL-R questionnaire had adequate internal consistency with Cronbach’s alphas between 0.75 and 0.91. Test-retest reliability was very strong (ICC_2.1 =0.91 to 0.96, p < 0.001). As hypothesized, the Arabic MQOL-R subscales demonstrated moderate to excellent correlation with functional subscales of EORTC QLQ-C30, and moderate to good correlation with Global health status/QoL.

Conclusion

The Arabic MQOL-R Questionnaire has adequate psychometric properties. Hence, it can be utilized in rehabilitation settings and research to measure health-related quality of life in the Arabic-speaking cancer population.

IMPLICATIONS FOR REHABILITATION

1. The Arabic version of McGill Quality of Life- Revised Questionnaire (MQOL-R) has been successfully translated, adapted, and validated into Modern Standard Arabic language.

2. The Arabic MQOL-R is reliable and valid for measuring health-related quality of life in the Arabic-speaking cancer population.

3. The Arabic MQOL-R can be used for clinical, rehabilitation and research purposes to evaluate the health-related quality of life in the Arabic-speaking cancer population.

Keywords:

• Quality of life
• cancer
• MQOL-R

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

The authors extend their appreciation to the Deputyship for Research & Innovation, “Ministry of Education“ in Saudi Arabia for funding this research work through the project number IFKSURG-1348.