Correlation between Hoehn and Yahr (H-Y) stages and clinical criteria
Parameter
Hoehn and Yahr (H-Y) stages
r
p
UPDRS-III
0.773
< 0.001*
BDI
0.735
< 0.001*
SDMT
–0.509
< 0.001*
BVMT-R
–0.258
0.020*
CVLT-II
–0.421
< 0.001*
CVLT-II delayed recall
–0.548
< 0.001*
MoCA score
–0.396
< 0.001*
HAM-A
0.574
< 0.001*
* Data is significant, p value < 0.05. UPDRS-III: Unified Parkinson’s Disease Rating Scale, Part III; BDI: Beck Depression Inventory; SDMT: Symbol Digit Modalities Test; BVMT-R: Brief Visuospatial Memory Test-Revised; CVLT-II: California Verbal Learning Test-II; MoCA: Montreal Cognitive Assessment; HAM-A: Hamilton Anxiety Rating Scale
The authors declare that they have no conflicts of interest regarding the publication of this article.
Ethical approval
This study was approved by the Institutional Review Board (IRB) of the Faculty of Medicine, Al-Azhar University, Cairo, Egypt (Approval number: Near-Med._78 Predictors Of Cognitive Impairment In Egyptian Patients With Parkinson’s Disease._000078), and was conducted in accordance with the Declaration of Helsinki.
Consent to participate
Informed consent to participate in the study was obtained from all participants.
Consent to publication
Informed consent to publication was obtained from relevant participants.
Availability of data and materials
The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.
Open Exploration maintains a neutral stance on jurisdictional claims in published institutional affiliations and maps. All opinions expressed in this article are the personal views of the author(s) and do not represent the stance of the editorial team or the publisher.
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