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- Garmy, Pernilla, et al.
(författare)
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Psychometric analysis of the Salutogenic Health Indicator Scale (SHIS) in adolescents
- 2017
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Ingår i: Scandinavian Journal of Public Health. - : SAGE Publications Ltd. - 1403-4948 .- 1651-1905. ; 45:3, s. 253-259
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Tidskriftsartikel (refereegranskat)abstract
- Aim: The aim of this study was to test the psychometric properties of the Salutogenic Health Indicator Scale (SHIS) in an adolescent population. Methods: The investigation was performed among Swedish students aged 13–15 years (n = 817; 58% girls). The SHIS was assessed for respondent acceptability, and its psychometric properties were evaluated according to classical test theory (regarding unidimensionality, targeting, reliability, and external construct validity). Results: The adolescents found it easy to complete the questionnaire, which was completed in an average of 4 minutes. Exploratory factor analysis, which is based on polychoric correlations, identified one factor, supporting the instrument’s unidimensionality. Floor/ceiling effects were ⩽ 3.3%. Reliability estimates yielded a Cronbach’s alpha value of 0.93; the test–retest reliability (n = 50; 2-week interval) coefficients were 0.89 for the total SHIS score and 0.52–0.79 for item scores. Spearman correlations with other variables were based on a priori expectations (self-rated general health, 0.595; depressive symptoms, −0.773; anxiety, −0.577; and sleep problems, 0.519). Conclusions: Our observations support both the acceptability and the psychometric properties of the SHIS as a brief, unidimensional assessment tool for salutogenic health in adolescents. Further studies using modern test theory are needed to better understand the measurement properties of the SHIS, including the functioning of its response categories and its comparability between adolescents and adults.
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| 2. |
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| 3. |
- Garmy, Pernilla, et al.
(författare)
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Salutogent frågeformulär för ungdomar
- 2017
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Våra observationer stöder både acceptansen och de psykometriska egenskaperna för SHIS som ett kort, en-dimensionellt frågeformulär för att mäta salutogen hälsa hos ungdomar.
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| 4. |
- Jakobsson, Ulf, et al.
(författare)
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Construct validity of the SF-12 in three different samples
- 2012
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Ingår i: Journal of Evaluation in Clinical Practice. - : Wiley-Blackwell Publishing Ltd. - 1356-1294 .- 1365-2753. ; 18:3, s. 560-566
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Tidskriftsartikel (refereegranskat)abstract
- Rationale, aims and objectives Studies have challenged the validity and underlying measurement model of the physical and mental component summary scores of the 36-item Short-Form Health Survey in, for example the elderly and people with neurological disorders. However, it is unclear to what extent these observations translate to physical and mental component summary scores derived from the 12-item short form (SF-12) of the 36-item Short-Form Health Survey. This study evaluated the construct validity of the SF-12 in elderly people and people with Parkinson's disease (PD) and stroke. Methods SF-12 data from a general elderly (aged 75+) population (n = 4278), people with PD (n = 159) and stroke survivors (n = 89) were analysed regarding data quality, reliability (coefficient alpha) and internal construct validity. The latter was assessed through item-total correlations, exploratory and confirmatory factor analyses. Results Completeness of data was high (93–98.8%) and reliability was acceptable (0.78–0.85). Item-total correlations argued against the suggested items-to-summary scores structure in all three samples. Exploratory factor analyses failed to support a two-dimensional item structure among elderly and stroke survivors, and cross-loadings of items were seen in all three samples. Confirmatory factor analyses showed lack of fit between empirical data and the proposed items-to-summary measures structure in all samples. Conclusions These observations challenge the validity and interpretability of SF-12 scores among the elderly, people with PD and stroke survivors. The standard orthogonally weighted SF-12 scoring algorithm is cautioned against. Instead, when the assumed two-dimensional structure is supported in the data, oblique scoring algorithms appear preferable. Failure to consider basic scoring assumptions may yield misleading results.
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