Validation of the Greek Neck Disability Index
Author Information
Author(s): Marianna Trouli, Howard Vernon, Kyriakos Kakavelakis, Maria Antonopoulou, Aristofanis Paganas, Christos Lionis
Primary Institution: University of Crete, Greece
Hypothesis
The study aimed to translate and validate the Neck Disability Index (NDI) for Greek patients with neck pain.
Conclusion
The Greek version of the NDI is a reliable and valid tool for measuring disability in patients with neck pain.
Supporting Evidence
- The Greek version of the NDI showed good internal consistency with a Cronbach alpha of 0.85.
- The test-retest reliability was very good with an Intraclass Correlation Coefficient of 0.93.
- Factor analysis revealed one factor explaining 44.77% of variance.
- The Spearman correlation coefficient indicated a significant relationship between NDI change scores and Global Rating of Change.
Takeaway
This study created a Greek version of a questionnaire to help doctors understand how neck pain affects people's daily lives.
Methodology
The study involved translating the NDI, pre-testing it with patients, and validating it through reliability and responsiveness assessments.
Potential Biases
Potential bias due to self-reporting and the specific demographic characteristics of the sample.
Limitations
The study faced issues with missing data and the low applicability of some items for certain demographics.
Participant Demographics
{"mean_age":62.3,"sex_distribution":{"female":36,"male":29},"education_levels":{"illiterate":6,"elementary":36,"high_school":8,"lyceum":7,"higher_education":5,"university":2},"pain_duration":{"acute":42,"subacute":11,"chronic":11},"previous_episodes":{"none":5,"1-10":14,">10":21},"co_morbidity":{"yes":53,"no":11}}
Statistical Information
P-Value
0.02
Confidence Interval
95% CI 0.84–0.97
Statistical Significance
p=0.02
Digital Object Identifier (DOI)
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