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The Copenhagen Neck Functional Disability Scale: a study of reliability and validity
A Jordan1, C Manniche, C Mosdal
1Department of Medical Orthopedics T9, National University Hospital, Denmark.
Journal of Manipulative and Physiological Therapeutics
|November 3, 1998
Summary
A new disability scale for neck pain patients shows excellent reliability and validity. This tool accurately measures patient-reported functional status and pain, proving valuable for clinical trials and care studies.
Area of Science:
- Orthopedics
- Rehabilitation Medicine
- Clinical Assessment
Background:
- Neck pain is a common condition affecting functional status.
- Accurate and reliable assessment tools are crucial for evaluating treatment efficacy in neck pain patients.
Purpose of the Study:
- To evaluate the reliability and validity of a newly developed disability scale for patients with neck pain.
Main Methods:
- The scale was tested on 162 patients with neck pain across three samples.
- Reliability was assessed through test-retest and between-day measures.
- Construct validity and responsiveness were evaluated using correlations with pain scores, global assessments, and physical measurements.
Main Results:
- The disability scale demonstrated high reliability (Cronbach's alpha = 0.9) and excellent internal consistency.
- Scores strongly correlated with pain and global assessments, indicating good construct validity.
- The scale showed moderate correlation with changes in pain post-treatment and weak correlation with physical measurements.
Conclusions:
- The newly developed disability scale is practical, reliable, and valid for assessing neck pain patients.
- It accurately captures patient-perceived functional status and pain.
- The scale is responsive to change and suitable for use in clinical trials and quality of care studies.