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Quality of Life Research
Erschienen in: Quality of Life Research 6/2016

11.12.2015

Structural and construct validity of the Leeds Multiple Sclerosis Quality of Life scale

verfasst von: Ipek Ensari, Robert W. Motl, Edward McAuley

Erschienen in: Quality of Life Research | Ausgabe 6/2016

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Abstract

Purpose

The Leeds Multiple Sclerosis Quality of Life (LMSQOL) scale was designed as an 8-item, unidimensional disease-targeted measure of quality of life (QOL). This study (1) tested the unidimensionality of the LMSQOL using confirmatory factor analysis (CFA) and (2) examined the construct validity of scores based on a nomological network.

Methods

The sample (N = 292) included persons with multiple sclerosis (MS) who were recruited from the Midwest region of the USA. Participants completed questionnaires that were delivered and returned using US Postal Service. We tested the fit of a single-factor model for the LMSQOL using CFA with the diagonally weighted least squares estimator in R. We examined the construct validity of the LMSQOL scores using Spearman rank-order correlations (r s) in SPSS.

Results

The single-factor model had a reasonable fit for the 8-item LMSQOL [χ 2 (20) = 83.19, p < .001, CFI = .97, SRMR = .07], but provided an excellent fit for a 7-item version of the LMSQOL [χ 2 (14) = 23.63, p > .05, CFI = .99, SRMR = .05]. LMSQOL scores demonstrated strong correlations with measures of psychological well-being (|r s| = .53–.74) and weak-to-moderate correlations with measures of physical functioning and disability (|r s| = .23–.57).

Conclusion

The unidimensional model provides a good fit for the LMSQOL, and its scores provide a valid measure of QOL in MS.
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Metadaten
Titel
Structural and construct validity of the Leeds Multiple Sclerosis Quality of Life scale
verfasst von
Ipek Ensari
Robert W. Motl
Edward McAuley
Publikationsdatum
11.12.2015
Verlag
Springer International Publishing
Erschienen in
Quality of Life Research / Ausgabe 6/2016
Print ISSN: 0962-9343
Elektronische ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-015-1202-5

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