Development and validation of patient diabetes knowledge questionnaire (PDKQ)

Area of Science:

• Endocrinology
• Medical Education
• Health Assessment Tools

Background:

• Assessing diabetes knowledge is crucial for identifying patient gaps.
• Standardized tools are needed for consistent scoring and effective education programs.

Purpose of the Study:

• To develop and validate the Patient Diabetes Knowledge Questionnaire (PDKQ).
• To create a reliable tool for assessing diabetes mellitus patients' knowledge.

Main Methods:

• The PDKQ was developed in three phases: item development, content validation (expert and face validation), and reliability testing (test-retest).
• Initial draft included 11 patient characteristics and 37 multiple-choice questions.
• Final validation involved 36 subjects, resulting in a 20-item questionnaire.

Main Results:

• Expert and face validation led to the exclusion of several items based on clarity, relevance, and content validity index.
• Test-retest analysis yielded an intraclass correlation coefficient of 0.88, indicating good reliability.
• The final PDKQ consists of 20 items.

Conclusions:

• The 20-item PDKQ is a reliable and robust tool for assessing diabetes knowledge in Malaysian patients.
• This questionnaire enables standardized knowledge assessment for targeted interventions and optimized diabetes care.