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Cross-cultural adaptation and psychometric properties of the Turkish version of the Manual Ability Measure-36 (MAM-36) in people with multiple sclerosis

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Abstract

Objective

The Manual Ability Measure-36 (MAM-36) has been used to assess subjective upper limb function in people with several neurological and non-neurological diseases. Besides, the MAM-36 is one of the most commonly used patient-reported outcome measures (PROMs) in people with multiple sclerosis (pwMS). The aim was to translate and conduct cross-cultural adaptation of the MAM-36 into Turkish and investigate its psychometric properties in pwMS.

Methods

The MAM-36 was translated and culturally adapted into Turkish. Two hundred pwMS were recruited for the psychometric study. Hand skills, handgrip strength, upper limb spasticity, disability level, and quality of life were evaluated by the validated performance-based tests and questionnaires including the Arm Function in Multiple Sclerosis Questionnaire (AMSQ) which is a validated MS-specific PROM to assess upper limb function.

Results

MAM-36 was significantly correlated with the performance-based tests and questionnaires, EDSS, age, and disease duration (p < 0.05). MAM-36 and AMSQ were strongly correlated (rs = − 0.90, p < 0.01). PwMS with spasticity had significantly lower MAM-36 scores compared to those without spasticity (p < 0.01). Internal consistency (Cronbach’s alpha = 0.97) and test-retest reliability (ICC = 0.97) was high.

Conclusion

The Turkish version of MAM-36 has been found as a valid and reliable method for measuring upper limb function in pwMS.

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Data available on request from the authors.

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Acknowledgments

The authors would like to thank Dr. Christine C. Chen for giving permission of this validation study; Asiye Tuba Ozdogar, Ozge Sagici, and Dr. Buse Ozcan Kahraman for their help during the translation and adaptation process; the Multiple Sclerosis Research Association for helping patient recruitment, and all the participants.

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Authors and Affiliations

  1. School of Physical Therapy and Rehabilitation, Dokuz Eylül University, Izmir, Turkey

    Ozge Ertekin

  2. Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Izmir Katip Celebi University, Izmir, Turkey

    Turhan Kahraman

  3. Graduate School of Health Sciences, Dokuz Eylül University, Izmir, Turkey

    Mona Aras

  4. Multiple Sclerosis Research Association, Izmir, Turkey

    Cavid Baba

  5. Department of Neurology, Faculty of Medicine, Dokuz Eylül University, Izmir, Turkey

    Serkan Ozakbas

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  1. Ozge Ertekin
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  2. Turhan Kahraman
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  5. Serkan Ozakbas
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Correspondence to Ozge Ertekin.

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The authors declare that they have no conflict of interest.

Ethics approval

The Noninvasive Research Ethics Board of Dokuz Eylül University approved the study protocol with the date of May 22, 2019 and approval number of 2019/13-13, which was administered to the provisions of the Declaration of Helsinki (as revised in Brazil 2013).

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Each participant signed an informed consent before participating to the study.

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Ertekin, O., Kahraman, T., Aras, M. et al. Cross-cultural adaptation and psychometric properties of the Turkish version of the Manual Ability Measure-36 (MAM-36) in people with multiple sclerosis. Neurol Sci 42, 2927–2936 (2021). https://doi.org/10.1007/s10072-020-04927-z

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