Reliability and Validity of the Thai Version of the Modified Japanese Orthopaedic Association Score (mJOA score)

Sirichai Wilartratsami; Borriwat Santipas; Panya Luksanapruksa; Surin Thanapipatsiri; Visit Vamvanij

doi:10.33192/Smj.2021.08

Reliability and Validity of the Thai Version of the Modified Japanese Orthopaedic Association Score (mJOA score)

Authors

Sirichai Wilartratsami Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700 http://orcid.org/0000-0001-7651-4196
Borriwat Santipas Department of Orthopedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok http://orcid.org/0000-0001-6804-6644
Panya Luksanapruksa Department of Orthopedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok http://orcid.org/0000-0002-9554-4259
Surin Thanapipatsiri Department of Orthopedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok
Visit Vamvanij Department of Orthopedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok http://orcid.org/0000-0002-6056-0961

DOI:

https://doi.org/10.33192/Smj.2021.08

Keywords:

Reliability, validity, Thai version, Modified Japanese Orthopaedic Association Score, Thai-mJOA

Abstract

Objective: To evaluate the reliability and validity of the Thai version of the modified Japanese Orthopaedic Association scale.
Methods: The modified Japanese Orthopaedic Association scale was translated into Thai language to create the Thai version of the Modified Japanese Orthopaedic Association (Thai-mJOA) scale. Translation was performed according to international standards using a forward-backward translation protocol. Translation was performed by 2 expert translators and 1 physician, and the final version was approved by an expert committee. Thai patients with cervical spondylosis with myelopathy were enrolled and evaluated using the Thai-mJOA scale, Nurick Grading, the Thai version of the Neck Disability Index (Thai-NDI), and the Thai version of the Short Form-36 (Thai-SF-36). Reliability and validity of the Thai-mJOA were assessed via comparison with the Nurick Grading and the Thai-NDI.
Results: Ninety-two patients were included. The most common compression level was C5-C6 vertebral disc. Cronbach’s alpha of the total Thai-mJOA showed excellent internal consistency (0.991). The intraclass correlation coefficient (ICC) for test-retest reliability was 0.981 (95% confidence interval [CI]: 0.972-0.988). Regarding concurrent validity, the motor dysfunction score of the lower extremities and the total score of the Thai-mJOA were strongly correlated with Nurick Grading (r=0.825, r=0.712, respectively). The total score of the Thai-mJOA was moderately correlated with the Thai-NDI (r=0.670).
Conclusion: The Thai-mJOA was found to be a valid and reliable tool for evaluating symptom severity in Thai patients with cervical spondylosis with myelopathy.

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Published

02-10-2020

How to Cite

Wilartratsami, S., Santipas, B., Luksanapruksa, P., Thanapipatsiri, S., & Vamvanij, V. (2020). Reliability and Validity of the Thai Version of the Modified Japanese Orthopaedic Association Score (mJOA score) . Siriraj Medical Journal, 73(1), 55–60. https://doi.org/10.33192/Smj.2021.08

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Issue

Vol. 73 No. 1 (2021): January

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Original Article

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