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Gepubliceerd in: Quality of Life Research 3/2020

09-11-2019

Assessing measurement invariance of MSQOL-54 across Italian and English versions

Auteurs: Andrea Giordano, Silvia Testa, Marta Bassi, Sabina Cilia, Antonio Bertolotto, Maria Esmeralda Quartuccio, Erika Pietrolongo, Monica Falautano, Monica Grobberio, Claudia Niccolai, Beatrice Allegri, Rosa Gemma Viterbo, Paolo Confalonieri, Ambra Mara Giovannetti, Eleonora Cocco, Maria Grazia Grasso, Alessandra Lugaresi, Elisa Ferriani, Ugo Nocentini, Mauro Zaffaroni, Alysha De Livera, George Jelinek, Alessandra Solari, Rosalba Rosato

Gepubliceerd in: Quality of Life Research | Uitgave 3/2020

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Abstracts

Purpose

The Multiple Sclerosis Quality of Life-54 (MSQOL-54) is a specific multiple sclerosis (MS) health-related quality of life inventory consisting of 52 items organized into 12 subscales plus two single items. No study was found in literature assessing its measurement invariance across language versions. We investigated whether MSQOL-54 items provide unbiased measurements of underlying constructs across Italian and English versions.

Methods

Three constrained levels of measurement invariance were evaluated: configural invariance where equivalent numbers of factors/factor patterns were required; metric invariance where equivalent factor loadings were required; and scalar invariance where equivalent item intercepts between groups were required. Comparative fit index (CFI), root mean square error of approximation (RMSEA), and standardized root mean square residual (SRMR) fit indices and their changes between nested models were used to assess tenability of invariance constraints.

Results

Overall, the dataset included 3669 MS patients: 1605 (44%) Italian, mean age 41 years, 62% women, 69% with mild level of disability; 2064 (56%) English-speaking (840 [41%] from North America, 797 [39%] from Australasia, 427 [20%] from UK and Ireland), mean age 46 years, 83% women, 54% with mild level of disability. The configural invariance model showed acceptable fit (RMSEA = 0.052, CFI = 0.904, SRMR = 0.046); imposing loadings and intercepts equality constraints produced negligible worsening of fit (ΔRMSEA < 0.001, ΔCFI = − 0.002, ΔSRMR = 0.002 for metric invariance; ΔRMSEA = 0.003, ΔCFI = − 0.013, ΔSRMR = 0.003 for scalar invariance).

Conclusions

These findings support measurement invariance of the MSQOL-54 across the two language versions, suggesting that the questionnaire has the same meaning and the same measurement paramaters in the Italian and English versions.
Bijlagen
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Metagegevens
Titel
Assessing measurement invariance of MSQOL-54 across Italian and English versions
Auteurs
Andrea Giordano
Silvia Testa
Marta Bassi
Sabina Cilia
Antonio Bertolotto
Maria Esmeralda Quartuccio
Erika Pietrolongo
Monica Falautano
Monica Grobberio
Claudia Niccolai
Beatrice Allegri
Rosa Gemma Viterbo
Paolo Confalonieri
Ambra Mara Giovannetti
Eleonora Cocco
Maria Grazia Grasso
Alessandra Lugaresi
Elisa Ferriani
Ugo Nocentini
Mauro Zaffaroni
Alysha De Livera
George Jelinek
Alessandra Solari
Rosalba Rosato
Publicatiedatum
09-11-2019
Uitgeverij
Springer International Publishing
Gepubliceerd in
Quality of Life Research / Uitgave 3/2020
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-019-02352-0

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