Urdu Version of Parkinson's Disease Questionnaire: Reliability and Validity Study

The study is aimed to translate and culturally adapt Parkinson's Disease Questionnaire-39 into Urdu language and to investigate validity and reliability of Parkinson's Disease Questionnaire-39 in Parkinson's diseased patient among Pakistani population.The study will be a cross sectional survey in which non-probability purposive sampling technique will be used to enroll the participants into the study as per criteria.

The results of the study will help to establish an understanding of validity and reliability of Urdu version of Parkinson's Disease Questionnaire-39 with quality of life of Parkinson's Disease patients in Pakistani population having Parkinson's Disease. Reliability of the scale will be checked through internal consistency and test-retest methods. Cronbach's alpha value will be used to analyze internal consistency and for analyzing test-retest reliability an intraclass correlation coefficient with 195 patients will be used

Inclusion criteria

• Idiopathic Parkinson's Disease
• Minimum age of 40 years
• Minimum level of 5 years of education
• A score equal to or greater than 23 on the Mini-Mental State Examination
• Patient experiencing at least two of the three cardinal symptoms of idiopathic Pairkinson Disease (rigidity, resting tremor, and bradykinesia.)

Exclusion criteria

• Patients with non-idiopathic Parkinsonian variants
• Patients with a history of drug or alcohol abuse in the last two years
• Patients with unstable medical problems that may place the patient at increased risk or may interfere with the assessment or treatment of Parkinson's
• Neurological operation on the brain within one year prior to study entry