The goal of this observational study is to investigate the relationship between sleep quality, cognitive functions, and disease severity in individuals with Parkinson's disease. The main question it aims to answer is: Is sleep quality associated with cognitive function and disease severity in individuals with Parkinson's disease? Participants will complete assessments of sleep quality, cognitive function, disease severity, and disease stage during a single evaluation session. Cognitive function will be evaluated using the Stroop Test, Clock Drawing Test, and Montreal Cognitive Assessment. Disease severity will be assessed using the Unified Parkinson's Disease Rating Scale, and disease stage will be determined using the Modified Hoehn and Yahr Scale.
Study Type
OBSERVATIONAL
Enrollment
75
Hacettepe University
Ankara, Ankara, Turkey (Türkiye)
Sleep Quality
Sleep quality will be assessed using the Pittsburgh Sleep Quality Index. Total scores range from 0 to 21, with higher scores indicating poorer sleep quality.
Time frame: Baseline
Stroop Test
Cognitive flexibility and selective attention will be assessed using the Stroop Test. Completion time and error rates will be recorded, with longer times and higher error rates indicating poorer performance. Time Frame: Baseline
Time frame: Baseline
Clock Drawing Test
Visuospatial ability and executive function will be assessed using the Clock Drawing Test. Scores will be recorded based on standard scoring criteria, with lower scores indicating impaired performance.
Time frame: Baseline
Disease Severity
Disease severity will be assessed using the Unified Parkinson's Disease Rating Scale. Higher scores indicate greater disease severity.
Time frame: Baseline
Montreal Cognitive Assessment
Global cognitive function will be assessed using the Montreal Cognitive Assessment. Total scores range from 0 to 30, with lower scores indicating greater cognitive impairment.
Time frame: Baseline
Disease Stage
Disease stage will be determined using the Modified Hoehn and Yahr Scale. Higher stages indicate more advanced disease.
Time frame: Baseline
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