An observational study in PARKINSON DISEASE (Disorder), sponsored by Acibadem University. Not yet recruiting at 1 site in Turkey (Türkiye). Open to participants aged 40 Years and older. Per ClinicalTrials.gov, last updated 2026-09-14.
Sponsored by Acibadem University · Observational
The aim of this study is to examine the validity and reliability of the Turkish version of the Parkinson's Neuropsychometric Dementia Assessment (PANDA) in individuals with Parkinson's disease. This cross-sectional methodological study will evaluate the psychometric properties of the Turkish PANDA, including internal consistency, test-retest reliability, and construct validity, in order to provide a valid and reliable instrument for the assessment of cognitive impairment and dementia-related cognitive changes in Turkish-speaking individuals with Parkinson's disease.
4,573 studies on the registry are indexed under Parkinson Disease; 1,086 are open to participants now.
This study's planned enrollment of 100 is close to the median of 96 across 1,085 observational studies indexed under Parkinson Disease.
Browse Parkinson Disease studies →Acibadem University is the lead sponsor of 220 studies on the registry; 51 are open to participants now.
Counted across the registry records on this site, refreshed daily.
The study population will consist of individuals with clinically diagnosed Parkinson's disease (Hoehn and Yahr stage 1-3), aged between 40 and 85 years, with adequate cognitive function (MMSE ≥ 24). Participants will be recruited from patients attending the Movement Disorders Outpatient Clinic of the Neurology Department. The study population represents ambulatory individuals with mild to moderate disease severity suitable for comprehensive biopsychosocial assessment.
**Inclusion Criteria:**
**Exclusion Criteria:**
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
MMSE and MoCA
Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Other: Parkinson Neuropsychometric Dementia Assessment
Participants will complete the Turkish version of the Parkinson Neuropsychometric Dementia Assessment (PANDA) as part of the psychometric evaluation process. The PANDA will be administered according to standardized instructions to assess cognitive performance in individuals with Parkinson's disease. To evaluate test-retest reliability, the Turkish PANDA will be re-administered to a subgroup of participants after a predefined interval under similar conditions. No therapeutic intervention will be provided as part of this methodological validation study.
Parkinson Neuropsychometric Dementia Assessment (PANDA) Total Score
Cognitive performance will be assessed using the Turkish version of the Parkinson's Neuropsychometric Dementia Assessment (PANDA) in individuals with Parkinson's disease. The PANDA is a brief cognitive screening instrument specifically developed for Parkinson's disease and includes tasks assessing learning and memory, verbal fluency, visuospatial processing, working memory, and delayed recall. The PANDA total score ranges from 0 to 30, with higher scores indicating better cognitive performance. The psychometric properties of the Turkish version, including internal consistency, test-retest reliability, and construct validity, will be evaluated.
Time frame: [Time Frame: Baseline (at the time of PANDA administration)]
Montreal Cognitive Assessment (MoCA) Total Score
Global cognitive performance will be assessed using the Montreal Cognitive Assessment (MoCA), a widely used cognitive screening tool that evaluates multiple cognitive domains, including attention, executive functions, memory, language, visuospatial abilities, abstraction, calculation, and orientation. The total score ranges from 0 to 30, with higher scores indicating better cognitive performance. MoCA scores will be used to evaluate the convergent construct validity of the Turkish version of the Parkinson Neuropsychometric Dementia Assessment (PANDA).
Time frame: [Time Frame: Baseline (at the time of cognitive assessment)]
Mini-Mental State Examination (MMSE) Total Score
General cognitive status will also be assessed using the Mini-Mental State Examination (MMSE), which evaluates orientation, registration, attention and calculation, recall, language, and visuospatial abilities. The total score ranges from 0 to 30, with higher scores indicating better cognitive performance. MMSE scores will be examined in relation to PANDA scores to further assess the convergent construct validity of the Turkish version of the PANDA.
Time frame: [Time Frame: Baseline (at the time of cognitive assessment)]
Plan to share: Undecided
No publications or documents are linked to this record.
Start is estimated for Oct 2026; primary completion for Nov 2026, 1 month later.
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This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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