Reliability and Validity Study of the Turkish Version of the Parkinson's Disease Dyskinesia Scale (PDYS-26)

NCT07023224 | Recruiting

• 1 other identifier: IZBU-FTR-ITB-01
• Study Type: observational
• Target: 130
• Locations: 1 country
• Sites: 2

Brief Summary

The aim of this methodological study was to investigate the Turkish validity and reliability of the Parkinson's Disease Dyskinesia Scale (PDYS-26).The scale evaluates choreic dyskinesia.Measures the impact of dyskinesia on activities of daily living in patients with Parkinson's disease. Hypotheses of the Study:

• Parkinson's Disease Dyskinesia Scale (PDYS-26) is reliable in Turkish.
• Parkinson's Disease Dyskinesia Scale (PDYS-26) is valid in Turkish. To determine the validity of dyskinesia;
• Tampa Kinesiophobia Scale,
• Mini BesTest,
• Activity Specific Balance Safety Scale (ABC) and
• Parkinson's Disease Questionnaire-39 will be evaluated.

Conditions

Idiopathic Parkinson Disease; Dyskinesias; Quality of Life

Keywords

Parkinson's disease; Dyskinesia; Parkinson's Disease Dyskinesia Scale

Outcome Measures

Primary Outcomes (1)

• (PDYS-26)

  Turkish version of Parkinson's Disease Dyskinesia Scale: It is a questionnaire that assesses the impact of dyskinesia on activities of daily living. It consists of 26 items. A higher score indicates greater impact.It is considered a consistent, reliable, and valid measure. It is easy to complete and has a short administration time.

  Baseline (Day 1) and 7 days post-baseline (Day 8)

Other Outcomes (4)

• Tampa Kinesiophobia Scale

  Baseline (Day 1)

• (Mini-BesTest)

  Baseline (Day 1)

• (ABC)

  Baseline (Day 1)

Study Arms (1)

Parkinson Patients with Dyskinesia

Parkinson's disease patients with a Unified Parkinson's Disease Rating Scale (UPDRS) dyskinesia score of ≥1. Participants must meet the inclusion criteria and provide informed consent.

Other: Turkish version of the Parkinson's Disease Dyskinesia Scale (PDYS-26)

Interventions

Turkish version of the Parkinson's Disease Dyskinesia Scale (PDYS-26) OTHER

The Turkish adaptation of the Parkinson's Disease Dyskinesia Scale (PDYS-26) is administered to individuals diagnosed with Parkinson's disease who have a dyskinesia score of ≥1 based on the Unified Parkinson's Disease Rating Scale (UPDRS) dyskinesia item. The scale is used to evaluate dyskinesia severity and assess its clinical applicability in Turkish-speaking populations.

Parkinson Patients with Dyskinesia

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

This study was planned as a methodological research. For this purpose, Parkinson's disease patients who applied to Izmir Çiğli Training and Research Hospital Neurology Outpatient Clinic and met the inclusion criteria will be included in the study. Written informed consent will be obtained from individuals who agree to participate in the study. Based on the commonly recommended participant-to-item ratio in validity and reliability studies (typically 5 to 10 participants per item), the sample size was determined as five times the number of items in the 26-item PDYS-26 scale, and a total of 130 patients with Parkinson's disease were included in the study.

You may qualify if:

• Being diagnosed with idiopathic Parkinson's disease
• H\&Y stage 1-3
• UPDRS dyskinesia item score ≥1
• Accepting to participate in the study

You may not qualify if:

• Diagnosis of atypical-secondary parkinsonism
• Severe musculoskeletal, neurological and/or cardiopulmonary problems that may affect the results of the assessment
• Mini Mental State Examination score \< 24

Sponsors & Collaborators

• Izmir Bakircay University: lead

Study Sites (2)

Bakirçay University Çiğli Regional Education Hospital

Izmir, İ̇zmi̇r, 35000, Turkey (Türkiye)

RECRUITING

Izmir Bakırçay Univercity

Izmir, 35000, Turkey (Türkiye)

RECRUITING

Related Publications (1)

• Katzenschlager R, Schrag A, Evans A, Manson A, Carroll CB, Ottaviani D, Lees AJ, Hobart J. Quantifying the impact of dyskinesias in PD: the PDYS-26: a patient-based outcome measure. Neurology. 2007 Aug 7;69(6):555-63. doi: 10.1212/01.wnl.0000266669.18308.af.

  PMID: 17679674 BACKGROUND

Related Links

• The original publication of the scale that is the subject of the Turkish adaptation study

MeSH Terms

Conditions

Parkinson Disease; Dyskinesias

Condition Hierarchy (Ancestors)

Parkinsonian Disorders; Basal Ganglia Diseases; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Movement Disorders; Synucleinopathies; Neurodegenerative Diseases; Neurologic Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Gulbın Ergın, PT, PhD

  Izmir Bakircay Univercity

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Irem Tepe Bark, PT

CONTACT

+905537491143; fztiremtepe@gmail.com

Gulbin Ergin, PT, PhD

CONTACT

+90 232 493 00 00; gulbin.ergin@bakircay.edu.tr

Study Design

• Study Type: observational
• Observational Model: CASE ONLY
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: May 28, 2025
• First Posted: June 15, 2025
• Study Start: November 14, 2024
• Primary Completion: November 30, 2025
• Study Completion: December 1, 2025
• Last Updated: September 19, 2025

Record last verified: 2025-09

Data Sharing

• IPD Sharing: Will not share

Locations

TU (2)