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Is either anosmia or constipation associated with cognitive dysfunction in Parkinson’s disease?

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  • Ming-Zhi Sheng
  • Ting-Chun Fang
  • Yi-Huei Chen
  • Ming-Hong Chang
  • Chun-Pai Yang
  • Ching-Heng Lin

Abstract

Objective: To clarify the association of anosmia or constipation with cognitive dysfunction and disease severity in patients with Parkinson’s disease (PD). Methods: Newly diagnosed patients with PD (less than 5 years) without a clinical diagnosis of dementia were included from February 2017 to August 2018. The subjects were further divided into subgroups based on whether anosmia occurred and the grade of constipation. The severity of PD motor symptoms was rated using the Movement Disorder Society-Sponsored Revision of the Unified Parkinson’s Disease Rating Scale (MDS-UPDRS), and cognitive functions were evaluated by Montreal Cognitive Assessment (MoCA). Statistical analyses including t-tests, chi-square tests, multiple linear regression, and binary logistic regression were used to determine statistical significance. Results: A total of 107 newly diagnosed PD patients were included in this study. The MoCA score was significantly lower in the anosmia group (p

Suggested Citation

  • Ming-Zhi Sheng & Ting-Chun Fang & Yi-Huei Chen & Ming-Hong Chang & Chun-Pai Yang & Ching-Heng Lin, 2021. "Is either anosmia or constipation associated with cognitive dysfunction in Parkinson’s disease?," PLOS ONE, Public Library of Science, vol. 16(6), pages 1-8, June.
    • Handle: RePEc:plo:pone00:0252451
    DOI: 10.1371/journal.pone.0252451
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