Cross-cultural adaptation and psychometric evaluation of the Yoruba version of Oswestry disability index

Autoři: Chidozie Emmanuel Mbada aff001;  Oluwabunmi Esther Oguntoyinbo aff001;  Francis Oluwafunso Fasuyi aff003;  Opeyemi Ayodiipo Idowu aff004;  Adesola Christiana Odole aff002;  Olusola Ayanniyi aff002;  Olubusola Esther Johnson aff001;  Elkanah Ayodele Orimolade aff005;  Ajibola Babatunde Oladiran aff006;  Francis Fatoye aff007
Působiště autorů: Department of Medical Rehabilitation, College of Health Sciences, Obafemi Awolowo University, Ile–Ife, Nigeria aff001;  Department of Physiotherapy, Faculty of Clinical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria aff002;  Department of Physiotherapy, Faculty of Allied Health Sciences, University of Medical Sciences, Ondo, Nigeria aff003;  Department of Physiotherapy, School of Basic Medical Sciences, College of Medical Sciences, University of Benin, Benin-City, Nigeria aff004;  Department of Orthopaedic Surgery and Traumatology, College of Health Sciences, Obafemi Awolowo University, Ile–Ife, Nigeria aff005;  Department of Orthopaedic Surgery and Traumatology, College of Medicine, University of Ibadan, Ibadan, Nigeria aff006;  Department of Health Professions, Faculty of Health, Psychology and Social Care, Manchester Metropolitan University, Manchester, United Kingdom aff007
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article



Low-Back Pain (LBP) is a common public health problem that is often worsened by maladaptive beliefs and disability. Thus, necessitating the need for availability of outcome measures to assess these sequelae among patients with chronic LBP. This study aimed to cross-culturally adapt and determine the psychometric properties of the Yoruba version of the ODI (ODI-Y).


The ODI-Y was cross-culturally adapted following the process involving forward translation, synthesis, backward translation, expert review, and pilot testing. Internal consistency and test-retest reliability of the ODI-Y were determined using the Cronbach’s alpha and intra-class correlation. Other psychometric properties explored included the factor structure, convergent validity, standard error of measurement and the minimal detectable change.


One hundred and thirty-six patients with chronic LBP took part in the validation of the ODI-Y; 86 of these individuals took part in the test-retest reliability (within 1-week interval) of the translated instrument. The mean age of the respondents was 50.5±10.6years. The ODI-Y showed a high internal consistency, with a Cronbach’s alpha (α) of 0.81. Test-retest of the Yoruba version of the ODI within 1-week interval yielded an Intra-Class Correlation coefficient of 0.89. The ODI-Y yielded a three-factor structure which accounted for 61.56% of the variance. Correlation of ODI-Y with the visual analogue scale was moderate (r = 0.30; p = 0.001). The standard error of measurement and minimal detectable change of the ODI-Y were 2.0 and 5.5.


The ODI was adapted into the Yoruba language and proved to have good psychometric properties that replicated the results of other obtainable versions. We recommend it for use among Yoruba speaking patients with LBP.

Klíčová slova:

Cross-cultural studies – Culture – Language – principal component analysis – Psycholinguistics – Psychometrics – Research validity – Syntax


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