Evaluating the Nottingham Health Profile Index of Distress
Author Information
Author(s): Wann-Hansson Christine, Klevsgård Rosemarie, Hagell Peter
Primary Institution: Malmö University
Hypothesis
The study evaluates the measurement properties and cross-diagnostic validity of the Nottingham Health Profile index of Distress (NHPD) among people with Parkinson's disease and peripheral arterial disease.
Conclusion
The NHPD is a valid survey tool for measuring illness-related distress in patients with Parkinson's disease and peripheral arterial disease.
Supporting Evidence
- The NHPD showed good overall and individual item fit in both disorders.
- Reliability was greater than 0.8 in all analyses.
- Seven items displayed signs of cross-diagnostic differential item functioning.
Takeaway
This study shows that a questionnaire can help understand how much distress people feel from their illnesses, and it works well for both Parkinson's and artery problems.
Methodology
Data from 215 people with Parkinson's disease and 258 with peripheral arterial disease were analyzed using Rasch analysis to evaluate model fit, reliability, and differential item functioning.
Potential Biases
Potential bias due to the concurrent use of multiple questionnaires and the original studies not being designed for the current purpose.
Limitations
The study only included two diagnostic groups and did not assess test-retest stability or responsiveness.
Participant Demographics
Participants included 215 people with Parkinson's disease and 258 with peripheral arterial disease, with a mean age of 69 for PAD and 65 for PD.
Statistical Information
P-Value
0.002
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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