Author Identifier
Ebenezer Afrifa-Yamoah
ORCID : 0000-0003-1741-9249
Kwasi Frimpong
ORCID : 0000-0001-5021-7804
Esther Adama
ORCID : 0000-0002-7771-2722
Wei Wang
ORCID : 0000-0002-1430-1360
Document Type
Journal Article
Publication Title
Health and Quality of Life Outcomes
Publisher
Springer Nature / BMC
School
Centre for Precision Health / School of Science / School of Medical and Health Sciences
RAS ID
36264
Funders
Edith Cowan University - Open Access Support Scheme 2021
Abstract
Background
The Suboptimal Health Status Questionnaire-25 (SHS-Q-25) developed to measure Suboptimal Health Status has been used worldwide, but its construct validity has only been tested in the Chinese population. Applying Structural Equation Modelling, we investigate aspects of the construct validity of the SHS-Q-25 to determine the interactions between SHS subscales in a Ghanaian population.
Methods
The study involved healthy Ghanaian participants (n = 263; aged 20–80 years; 63% female), who responded to the SHSQ-25. In an exploratory factor and parallel analysis, the study extracted a new domain structure and compared to the established five-domain structure of SHSQ-25. A confirmatory factor analysis (CFA) was conducted and the fit of the model further discussed. Invariance analysis was carried out to establish the consistency of the instrument across multi-groups.
Results
The extracted domains were reliable with Cronbach’s ɑ of 0.846, 0.820 and 0.864 respectively, for fatigue, immune-cardiovascular and cognitive. The CFA revealed that the model fit indices were excellent
(RMSEA = 0.049 < 0.08, CFI = 0.903 > 0.9, GFI = 0.880 < 0.9, TLI = 0.907 > 0.9).
The fit indices for the three-domain model were statistically superior to the five-domain model. There were, however, issues of insufficient discriminant validity as some average variance extracts were smaller than the corresponding maximum shared variance. The three-domain model was invariant for all constrained aspects of the structural model across age, which is an important risk factor for most chronic diseases.
Conclusion
The validity tests suggest that the SHS-Q25 can measure SHS in a Ghanaian population. It can be recommended as a screening tool to early detect chronic diseases especially in developing countries where access to facilities is diminished.
DOI
10.1186/s12955-021-01810-z
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Adua, E., Afrifa-Yamoah, E., Frimpong, K., Adama, E., Karthigesu, S. P., Anto, E. O., ... Wang, W. (2021). Construct validity of the suboptimal health status questionnaire-25 in a Ghanaian population. Health and Quality of Life Outcomes, 19, article 180. https://doi.org/10.1186/s12955-021-01810-z