King's Parkinson's Disease Pain Questionnaire: reliability and convergent construct validity

Area of Science:

• Neurology
• Psychometrics
• Pain Management

Background:

• Parkinson's disease (PD) is a neurodegenerative disorder that frequently causes pain.
• Accurate pain assessment is crucial for effective PD management.
• The King's Parkinson's Disease Pain Questionnaire (KPDPQ) is a tool designed for this purpose.

Purpose of the Study:

• To evaluate the reliability and convergent construct validity of the KPDPQ.
• To provide evidence for the KPDPQ's suitability in clinical practice.

Main Methods:

• A psychometric study involving 75 older adults with Parkinson's disease.
• The KPDPQ was administered twice by different researchers and reapplied by one researcher after 15 days.
• Reliability was assessed using Cronbach's alpha (internal consistency) and intraclass correlation coefficient (stability).
• Convergent construct validity was examined by comparing KPDPQ scores with the Geriatric Pain Measure.

Main Results:

• Internal consistency (Cronbach's alpha) averaged above 0.60 across assessments.
• Test-retest reliability (intraclass correlation) exceeded 0.90.
• A significant, albeit weak, correlation was found between the KPDPQ and the Geriatric Pain Measure.

Conclusions:

• The KPDPQ exhibits adequate reliability and convergent construct validity.
• The findings support the use of the KPDPQ in clinical settings for Parkinson's disease pain assessment.