• Spine · Dec 2023

    Cross-cultural Adaptation and Psychometric Validation of the Hindi Version of the Neck Disability Index in Patients with Chronic Neck Pain.

    • Dipti Baban Geete, Bhavana Suhas Mhatre, and Howard Vernon.
    • Physiotherapy School and Centre, Seth GSMC and KEMH, MH, India.
    • Spine. 2023 Dec 1; 48 (23): 166316691663-1669.

    Study DesignTranslation and psychometric testing.ObjectivesTo cross-culturally adapt the Neck Disability Index (NDI) into the Hindi language, the local language of India, and to investigate the psychometric properties of the Neck Disability Index-Hindi (NDI-H) version in patients with neck pain.Summary Of Background DataThe NDI is the most used self-reported outcome measure for neck pain. The previous NDI-H version did not obtain advance permission from Mapi trust to translate this scale. As a result, this scale's availability is limited.Materials And MethodsFollowing established guidelines, the NDI was translated and culturally adapted into Hindi. A total of 120 chronic neck pain patients (20 for cognitive interviews and 100 for psychometric testing) participated in this study. The content validity, construct validity, internal consistency, test-retest reliability, and responsiveness of the NDI-H were all evaluated. The intraclass correlation coefficient was computed to determine test-retest reliability. Internal consistency was assessed using Cronbach α. The NDI's factor structure was investigated using principal component factor analysis. The Neck Pain and Disability Scale, Numeric Pain Rating Scale, and Anxiety and Depression scales were used to test criterion validity. The receiver operating characteristic curve analysis was used to determine the cut-off point and the area under the curve.ResultsThe NDI-H demonstrated good test-retest reliability (intraclass correlation coefficient = 0.92) and excellent internal consistency (Cronbach α = 0.90). The one-factor structure was revealed by the factor analysis. The NDI has a strong relationship with the Neck Pain and Disability Scale and Numeric Pain Rating Scale, as well as the Anxiety and Depression scales. The cut-point for detecting a change was 9.3.ConclusionsThe NDI was successfully translated into Hindi in this study. The NDI-H is a reliable and valid and responsive instrument that can be used to treat patients with chronic neck pain in clinical and research settings.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

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