Rasch analysis of the Neck Bournemouth Questionnaire: Turkish version, validity, and reliability study

Area of Science:

• Rehabilitation Medicine
• Health Outcomes Measurement
• Psychometrics

Background:

• Multidimensional assessment is crucial for effective chronic neck pain management.
• The Neck Bournemouth Questionnaire (NBQ) is a tool for evaluating neck pain patients.
• Validation of the Turkish NBQ is needed for its use in Turkish-speaking populations.

Purpose of the Study:

• To investigate the validity and reliability of the Turkish version of the Neck Bournemouth Questionnaire (NBQ).
• To assess the psychometric properties of the Turkish NBQ for chronic neck pain patients.

Main Methods:

• Rasch measurement model for internal construct validity.
• Convergent validity assessed through correlations with established scales (NDI, NPDS, BDI, BAI).
• Reliability evaluated using Cronbach's alpha, Person Separation Index (PSI), and Differential Item Functioning (DIF) for test-retest and internal consistency.

Main Results:

• The Turkish NBQ demonstrated a 2-factor structure.
• No Differential Item Functioning (DIF) was observed for any item.
• Good internal consistency (Cronbach's alpha: F1=0.89, F2=0.77) and reliability (PSI: F1=0.87, F2=0.87) were found.
• Strong correlations with Neck Disability Index (NDI) and Neck Pain and Disability Scale (NPDS) confirmed convergent validity.
• Correlations with Beck Depression Inventory (BDI) and Beck Anxiety Inventory (BAI) supported the assessment of psychological comorbidities.

Conclusions:

• The Turkish version of the Neck Bournemouth Questionnaire (NBQ) is a valid and reliable instrument.
• The NBQ can be confidently used for the multidimensional evaluation of Turkish patients with chronic neck pain.
• This validated tool aids in personalized treatment planning for neck pain.