Bradykinesia Subscale Administered Alone Versus Regular Administration: Psychometric Properties

Study Overview
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Brief Summary
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The purpose of this study is to examine whether scores on questionnaires that rate how much Parkinson's Disease (PD) has slowed movements of the body differ when the order of the questions are changed. The consistency and accuracy of the questionnaires will also be examined. It is hypothesized that there will not be a difference.

Official Title
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Investigation of the Psychometric Properties of the Bradykinesia Subscale When Administered Alone Versus as a Component of the Entire Motor Examination Section of the Unified Parkinson's Disease Rating Scale

Conditions
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Parkinson's Disease

Intervention / Treatment
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* Other: Bradykinesia UPDRS Motor Full Examination
* Other: Bradykinesia subscale of UPDRS Motor Examination


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or Female at least 30 years of age Willing to be assessed using the motor examination section of the UPDRS and the SPES/SCOPA motor evaluation Patients must be willing and able to give written informed consent prior to performing an study procedures Be in the ON State (only for patients who fluctuate between ON and OFF states) Exclusion Criteria: Absence of bradykinesia at the time of assessment Hoehn and Yahr stage not available from patient's chart or not assessed between 3 and 180 days prior to clinic visit Has received and experimental drug within the last thirty (30) days

Ages Eligible for Study
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Minimum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Full Exam<br>The first group will receive the full motor examination section in its original order. | Other: Bradykinesia UPDRS Motor Full Examination<br>* The first group will receive the full motor examination section in its original order.<br>* Other names: Experimental group;|
| Subscale<br>The second group will receive the bradykinesia subscale first followed by the remainder of the motor examination section. | Other: Bradykinesia subscale of UPDRS Motor Examination<br>* The second group will receive the bradykinesia subscale first followed by the remainder of the motor examination section.<br>* Other names: Subscale 1, Bradykinesia subscale;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Scores on the UPDRS motor evaluation subscale are equivalent. |  | 4 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Correlations between the UPDRS motor examination bradykinesis subscale and the remaining UPDRS motor examination items, Hoeh and Yahr stage, Schwab and England scale, and SPES/SCOPA motor evaluation. |  | 4 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Parkinson's Disease, Movement Disorders, Unified Parkinson's Disease Rating Scale, Short Parkinson's Evaluation Scale, Scales for Outcomes in Parkinson's Disease, Motor Evaluation, Schwab and England activities of daily living, Bradykinesia, psychometrics, order effects, hoehn yahr aging, assessments