Vol 55, No 2 (2021)
Research Paper
Published online: 2021-02-02

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Validation of the Polish version of the Unified Dyskinesia Rating Scale (UDysRS)

Joanna Siuda1, Magdalena Boczarska-Jedynak2, Sławomir Budrewicz3, Jarosław Dulski45, Monika Figura6, Urszula Fiszer7, Agata Gajos8, Agnieszka Gorzkowska9, Ewa Koziorowska-Gawron3, Dariusz Koziorowski6, Anna Krygowska-Wajs10, Monika Rudzińska-Bar11, Jarosław Sławek45, Mateusz Toś1, Magdalena Wójcik-Pędziwiatr11, Jeffrey Lin12, Sheng Luo13, Pablo Martinez-Martin14, Glenn T. Stebbins15, Christopher G. Goetz15, Grzegorz Opala1, Polish UDysRS Validation Task Force
Pubmed: 33528833
Neurol Neurochir Pol 2021;55(2):186-194.

Abstract

Background. In 2008, the Movement Disorders Society published the Unified Dyskinesia Rating Scale (UDysRS). This has become the established tool for assessing the severity and disability associated with dyskinesia in patients with Parkinson’s Disease (PD). We translated and validated the Polish version of the UDysRS, explored its dimensionality, and compared it to the Spanish version, which is the Reference Standard for UDysRS translations. Material and methods. The UDysRS was translated into Polish by a team led by JS and GO. The back-translation, completed by colleagues fluent in both Polish and English who were not involved in the original translation, was reviewed and approved by the Executive Committee of the MDS Rating Scales Programme. Then the translated version of the UDysRS underwent cognitive pretesting, and the translation was modified based on the results. The approved version was considered to be the Official Working Document of the Polish UDysRS and was tested on 250 Polish PD patients recruited at movement disorder centres. Data was compared to the Reference Standard used for validating UDysRS translations.

Results. The overall factor structure of the Polish version was consistent with that of the Reference Standard version, as evidenced by the high Confirmatory Fit Index score (CFI = 0.98). The Polish UDysRS was thus confirmed to share a common factor structure with the Reference Standard. Conclusions. The Official Polish UDysRS translation is recommended for use in clinical and research settings. Worldwide use of uniform rating measures offers a common ground to study similarities and differences in disease manifestations and progression across cultures.

 

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References

  1. Fabbrini G, Brotchie JM, Grandas F, et al. Levodopa-induced dyskinesias. Mov Disord. 2007; 22(10): 1379–89; quiz 1523.
  2. Espay AJ, Morgante F, Merola A, et al. Levodopa-induced dyskinesia in Parkinson disease: Current and evolving concepts. Ann Neurol. 2018; 84(6): 797–811.
  3. Jost WH, Altmann C, Fiesel T, et al. Influence of levodopa on orthostatic hypotension in Parkinson's Disease. Neurol Neurochir Pol. 2020; 54(2): 200–203.
  4. Tipton PW, Uitti RJ, Cheshire WP. 'Falling off' the dopamine wagon. Neurol Neurochir Pol. 2019; 53(5): 390–391.
  5. Goetz CG, Stebbins GT, Chung KA, et al. Which dyskinesia scale best detects treatment response? Mov Disord. 2013; 28(3): 341–346.
  6. Goetz CG, Nutt JG, Stebbins GT. The Unified Dyskinesia Rating Scale: presentation and clinimetric profile. Mov Disord. 2008; 23(16): 2398–2403.
  7. Goetz CG, Stebbins GT, Wang Lu, et al. IPMDS-Sponsored Scale Translation Program: Process, Format, and Clinimetric Testing Plan for the MDS-UPDRS and UDysRS. Mov Disord Clin Pract. 2014; 1(2): 97–101.
  8. Cubo E, Goetz CG, Stebbins GT, et al. Independent Spanish Validation of the Unified Dyskinesia Rating Scale. Mov Disord Clin Pract. 2014; 1(3): 213–218.
  9. Siuda J, Boczarska-Jedynak M, Budrewicz S, et al. Validation of the Polish version of the Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS). Neurol Neurochir Pol. 2020; 54(5): 416–425.
  10. Fowler FJ. Improving survey questions: design and evaluation. Applied social research methods series. 38. Thousand Oaks, CA: Sage Publications. ; 1995.
  11. Muthen LK. and Muthen BO. M plus user’s guide. Sixth edition. Los Angeles, CA: Muthen. : Muthen.
  12. Hatcher L. Step-by-step approach to using the SAS system for factor analysis and structural equation modeling. 1994. SAS Inst. , Cary, NC. ; 73.
  13. Brown TA. Confirmatory Factor Analysis for Applied Research. New York, NY: The Guilford Press. SAGE Publications. : Inc.
  14. Browne M. An Overview of Analytic Rotation in Exploratory Factor Analysis. Multivariate Behavioral Research. 2010; 36(1): 111–150.
  15. Gorsuch RL. Factor analysis. Second edition. Hillsdale, NJ: 1983. Lawrence Erlbaum Associations. : Inc.