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Reliability and factor structure of the Multidimensional Pain Inventory--Swedish Language Version (MPI-S)
Gunnar Bergström1, Irene B Jensen, Lennart Bodin
1Section of Personal Injury Prevention, Karolinska Institute, Stockholm, Sweden Department of Occupational and Environmental Medicine, Örebro Medical Center, Örebro, Sweden Department of Psychology, University of Gothenburg, Gothenburg, Sweden.
Pain
|April 16, 1998
Summary
The Swedish Multidimensional Pain Inventory (MPI-S) shows good reliability and generalizability for its first two sections in chronic pain assessment. However, the factor structure for the third section, measuring activities, could not be confirmed.
Area of Science:
- Psychology
- Psychometrics
- Pain Management
Background:
- The Multidimensional Pain Inventory (MPI) is a key tool for assessing chronic pain's psychological impact.
- Previous translations into German and Dutch have demonstrated reliability and validity.
- Understanding the psychometric properties of translated instruments is crucial for cross-cultural research.
Purpose of the Study:
- To evaluate the reliability and factor structure of the Swedish translation of the MPI (MPI-S).
- To assess the generalizability of the MPI's factor structure to a Swedish chronic pain population.
Main Methods:
- Confirmatory factor analysis (CFA) using LISREL-8 on 682 chronic musculoskeletal pain patients.
- Internal consistency was assessed using Cronbach's alpha.
- Test-retest reliability was evaluated on a sub-sample of 54 patients.
Main Results:
- Sections 1 and 2 of the MPI-S demonstrated good overall reliability and stability.
- After item exclusion, the factor structure for sections 1 and 2 aligned with other MPI versions.
- The hypothesized factor structure for section 3 could not be replicated, suggesting its use for general activity level assessment.
Conclusions:
- Sections 1 and 2 of the MPI-S are reliable, stable, and generalizable for assessing chronic pain in Swedish populations.
- Section 3 requires further investigation or modification as its factor structure was not confirmed.
- The MPI-S, with adjustments, can be a valuable tool for psychological assessment in chronic pain research.