Structure of the sense of coherence scale in a nationally representative sample: the Finnish Health 2000 survey |
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Authors: | Eduardo Bernabé Georgios Tsakos Richard G Watt Anna L Suominen-Taipale Antti Uutela Jussi Vahtera Mika Kivim?ki |
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Institution: | (1) Department of Epidemiology and Public Health, University College London, London, UK;(2) National Institute for Health and Welfare, Helsinki, Finland;(3) Finnish Institute of Occupational Health, Helsinki, Finland |
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Abstract: | Objective To examine the structure of the sense of coherence (SOC) scale in a general population.
Methods This study analysed the responses of 6,217 subjects aged 30 years and over who participated in the Finnish Health 2000 survey
(response rate 77.4%). Participants completed an abbreviated 12-item version of the SOC scale. Two alternative structures
were tested using confirmatory factor analysis: a one-factor model, with all scale items loaded onto a single latent factor
representing the SOC construct, versus a second-order factor model, with scale items loaded onto their corresponding latent
factors representing the three SOC components (comprehensibility, manageability and meaningfulness), which are, in turn, dependent
on one single higher-order SOC construct.
Results The one-factor model was fitted to the data after allowing the errors of comprehensibility item 5 and manageability item 6
to correlate, as was done in previous studies among Finnish adults. The comparative fit index (CFI), Tucker–Lewis index (TLI)
and root mean square error of approximation (RMSEA) for the one-factor model were, respectively, 0.97–0.98, 0.96–0.97 and
0.05–0.09 across both sexes and three age groups. The second-order factor model had correlations between latent factors higher
than 1, even after alternative model modifications, casting doubts on this more complex structure.
Conclusion These data suggest that the components of comprehensibility, manageability and meaningfulness should be merged when measuring
SOC with the 12-item SOC scale in the Finnish general population. |
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Keywords: | Sense of coherence Construct validity Confirmatory factor analysis Adults Finland |
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