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. 2023 Mar 13;10(4):586-595.
doi: 10.1002/mdc3.13658. eCollection 2023 Apr.

Expanded and Independent Spanish Validation of the MDS-Non Motor Rating Scale

Esther Cubo  1   2 , Sheng Luo  3 , Pablo Martínez-Martín  4 , Glenn T Stebbins  5 , Jeffrey Lin  3 , Dongrak Choi  3 , Alvaro García-Bustillo  6 , Pablo Mir  4   7   8 , Diego Santos-Garcia  9 , Marcos Serrano-Dueñas  10 , Mayela Rodriguez-Violante  11 , Carlos Singer  12 ; and the Spanish MDS‐NMS Validation Study Group
Collaborators, Affiliations

Expanded and Independent Spanish Validation of the MDS-Non Motor Rating Scale

Esther Cubo et al. Mov Disord Clin Pract. .

Erratum in

  • ERRATUM.
    [No authors listed] [No authors listed] Mov Disord Clin Pract. 2023 Sep 12;10(9):1440. doi: 10.1002/mdc3.13836. eCollection 2023 Sep. Mov Disord Clin Pract. 2023. PMID: 37772297 Free PMC article.
  • Erratum.
    [No authors listed] [No authors listed] Mov Disord Clin Pract. 2024 Mar;11(3):322. doi: 10.1002/mdc3.13924. Epub 2024 Jan 27. Mov Disord Clin Pract. 2024. PMID: 38279887 Free PMC article. No abstract available.

Abstract

Background: The Movement Disorder Society-sponsored Non-motor Rating Scale (MDS-NMS) assess the severity and disability caused by non-motor symptoms (NMS) in Parkinson's disease (PD).

Objective: This article encapsulates the formal process for completing this program and the data on the first officially approved non-English version of the MDS-NMS (Spanish).

Methods: The MDS-NMS translation program involves four steps: translation and back-translation; cognitive pre-testing to ensure that raters and patients understand the scale and are comfortable with its content; field testing of the finalized version; analysis of the factor structure of the tested version against the original English language version for the nine domains that could be analyzed in a confirmatory factor analysis. To be designated an "Official MDS translation," the confirmatory factor analysis Comparative Fit Index had to be ≥0.90.

Results: The Spanish MDS-NMS was tested in 364 native-Spanish-speaking patients with PD from seven countries. For all subjects with fully computable data with all domains of the MDS-NMS (n = 349), the Comparative Fit Index was ≥0.90 for the nine eligible domains. Missing data were negligible and moderate floor effect (42.90%) was found for the Non-Motor Fluctuations subscale. Item homogeneity coefficient was adequate, and the correlation of the MDS-NMS domains with other measures for related constructs was acceptable (r s ≥ 0.50).

Conclusions: The Spanish version of the MDS-NMS followed the IPMDS Translation Program protocol, reached the criterion to be designated as an Official Translation, and is now available on the MDS website.

Keywords: Parkinson's disease; non‐motor symptoms; rating scale.

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Figures

FIG 1
FIG 1
Scree plots of items A to M of the MDS‐NMS.
See this image and copyright information in PMC

References

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