Validation of the Slovenian version of multiple sclerosis quality of life (MSQOL-54) instrument
Article Category: Original scientific article
Published Online: Oct 09, 2017
Page range: 260 - 267
Received: Feb 17, 2017
Accepted: Aug 22, 2017
DOI: https://doi.org/10.1515/sjph-2017-0035
Keywords
© 2017 National Institute of Public Health, Slovenia
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Purpose
To cross-culturally adapt and validate Multiple Sclerosis Quality of Life-54 (MSQOL-54) instrument.
Methods
The study which enrolled 134 Slovenian multiple sclerosis (MS) patients was conducted from March to December 2013. The internal consistency of the MSQOL-54 instrument was evaluated by Cronbach’s alpha coefficient (α), and its dimensionality assessed by the principal component analysis (PCA).
Results
The whole instrument had high internal consistency (α=0.88), as well as the majority of its twelve subscales (α=0.83-0.94). The results of the PCA showed two components with eigenvalue greater than 1, explaining 59.4% of the cumulative variance. Further results indicated good construct validity of the instrument with the physical health-related-quality-of-life subscales loading highly on the physical component, and mental health-related-quality-of-life subscales loading highly on the mental component.
Conclusion
The Slovenian version of the MSQOL-54 instrument proved to be an internally consistent and accurate tool, well accepted by the Slovenian MS patients. The adequate psychometric properties warrant the scientifically sound version of the MSQOL-54 instrument, which is from now on at disposal to all health professionals dealing with MS patients in Slovenia.