Relationship between the MDS-UPDRS and Quality of Life: A large multicenter study of 3206 patients

Matej Skorvanek, Pablo Martinez-Martin, Norbert Kovacs, Ivan Zezula, Mayela Rodriguez-Violante, Jean Christophe Corvol, Pille Taba, Klaus Seppi, Oleg Levin, Anette Schrag, Iciar Aviles-Olmos, Mario Alvarez-Sanchez, Tomoko Arakaki, Zsuzsanna Aschermann, Eve Benchetrit, Charline Benoit, Alberto Bergareche-Yarza, Amin Cervantes-Arriaga, Anabel Chade, Florence CormierVeronika Datieva, David A. Gallagher, Nelida Garretto, Zuzana Gdovinova, Oscar Gershanik, Milan Grofik, Vladimir Han, Liis Kadastik-Eerme, Monica M. Kurtis, Graziella Mangone, Juan Carlos Martinez-Castrillo, Amelia Mendoza-Rodriguez, Michal Minar, Henry P. Moore, Mari Muldmaa, Christoph Mueller, Bernadette Pinter, Werner Poewe, Karin Rallmann, Eva Reiter, Carmen Rodriguez-Blazquez, Carlos Singer, Peter Valkovic, Christopher G. Goetz, Glenn T. Stebbins

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


Background: The relationship between Health-Related Quality of Life (HRQoL) and MDS-UPDRS has not been fully studied so far. The aim of this study was to evaluate the relationship between all MDS-UPDRS components and HRQoL in a representative international cohort of PD patients. Methods: We collected demographic and disease-related data as well as MDS-UPDRS and PDQ8 scales. Data were analyzed using correlations between PDQ8 and all MDS-UPDRS items, subsequently two hierarchical multiple regressions were performed, first between the scores of the MDS-UPDRS Parts and PDQ8 and second between individual items from those Parts demonstrating significant relationship to PDQ8 scores in the first regression. LASSO regression analyses were performed to evaluate the relationship between PDQ8 and all individual MDS-UPDRS items. Results: A total of 3206 PD patients were included in the study. In the first regression analysis, PDQ8 was significantly related to MDS-UPDRS parts I and II, but not to III and IV. In the second regression model, significant contributions to PDQ8 were found for Part I items Fatigue, Pain, Depressed mood, Apathy; and Part II items Dressing, Doing hobbies, Freezing, Speech and Tremor. In the LASSO analysis, six Part I, seven Part II, three Part III and one Part IV items contributed to PDQ8 scores. The five items most significantly related to the model were Depressed mood, Dressing, Apathy, Pain and Fatigue. Conclusions: This is so far the largest study related to HRQoL issues in PD. Restrictions in activities of daily living and non-motor symptoms significantly contribute to HRQoL in PD.

Original languageEnglish (US)
Pages (from-to)83-89
Number of pages7
JournalParkinsonism and Related Disorders
StatePublished - Jul 2018


  • Activities of daily living
  • Non-motor symptoms
  • Parkinson's disease
  • Quality of Life

ASJC Scopus subject areas

  • Neurology
  • Geriatrics and Gerontology
  • Clinical Neurology


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