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Updated: Dec 25, 2025
Dual-Task Stroop Paradigm for Detecting Cognitive Deficits in High-Functioning Stroke Patients
Published on: December 16, 2022
Impact of different methods defining post-stroke neurocognitive disorder: The Nor-COAST study
Ragnhild Munthe-Kaas1,2, Stina Aam3,4, Hege Ihle-Hansen1,2,5
1Department of Medicine Vestre Viken Hospital Trust Bærum Hospital Drammen Norway.
Introduction:
Post-stroke neurocognitive disorder (NCD) is common; prevalence varies between studies, partially related to lack of consensus on how to identify cases. The aim was to compare the prevalence of post-stroke NCD using only cognitive assessment (model A), DSM-5 criteria (model B), and the Global Deterioration Scale (model C) and to determine agreement among the three models.
Methods:
In the Norwegian Cognitive Impairment After Stroke study, 599 patients were assessed 3 months after suffering a stroke.
Results:
The prevalence of mild NCD varied from 174 (29%) in model B to 83 (14%) in model C; prevalence of major NCD varied from 249 (42%) in model A to 68 (11%) in model C. Cohen's kappa and Cohen's quadratic weighted kappa showed fair to very good agreement among models; the poorest agreement was found for identification of mild NCD.
Discussion:
The findings indicate a need for international harmonization to classify post-stroke NCD.
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