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Quality of Life Research
Gepubliceerd in:

01-08-2015 | Brief Communication

Testing measurement invariance of the GHQ-28 in stroke patients

Auteurs: Theresa Munyombwe, Robert M. West, Kate Hill

Gepubliceerd in: Quality of Life Research | Uitgave 8/2015

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Abstract

Background

In order to combine self-reported measures data from multiple studies to conduct an integrated data analysis, the construct measured must have the same meaning across the studies. This study investigated the measurement invariance of the General Health questionnaire (GHQ-28) in two stroke studies before combining the data for an integrative data analysis.

Methods

The study used data from the Stroke Outcomes Study 1 (SOS1, n = 448) and second Stroke Outcomes Study (SOS2, n = 585). The initial analysis was a confirmatory factor analysis (CFA) for each study separately to confirm the four-factor structure of GHQ-28 questionnaire. Multi-group confirmatory factor analysis (MG-CFA) was used to assess the measurement invariance of the GHQ-28 questionnaire in the two stroke cohorts. Measurement invariance at configural invariance (same items associated with same factor across groups); factor loading invariance (equal factor loadings across groups) and scalar invariance (equal intercepts across groups) was examined.

Results

CFA supported all three invariances measured.

Conclusion

Results showed that the GHQ-28 questionnaire has comparable measurement properties in the SOS1 and SOS2 stroke studies. Strong measurement invariance was established, and based on the results from this study, integrative data analysis of GHQ-28 scores from the two stroke studies is merited.
vorige artikel Testing item response theory invariance of the standardized Quality-of-life Disease Impact Scale (QDIS®) in acute coronary syndrome patients: differential functioning of items and test
volgende artikel Assessing measurement invariance of three depression scales between neurologic samples and community samples
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Metagegevens
Titel
Testing measurement invariance of the GHQ-28 in stroke patients
Auteurs
Theresa Munyombwe
Robert M. West
Kate Hill
Publicatiedatum
01-08-2015
Uitgeverij
Springer International Publishing
Gepubliceerd in
Quality of Life Research / Uitgave 8/2015
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-015-0924-8

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