ArticleBMC palliative care2025
Measuring a family sense of coherence: a rasch-based study extending dyadic data analyses.
Article in BMC palliative care, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundFamily sense of coherence (FSOC) seems to reduce distress in the family and promote the well-being of the family. Therefore, getting accurate measurements for families with long-term illnesses is of particular interest. This study explores dyadic data analysis from the dyadic- and single-informant perspectives, and the measurement properties of the FSOC-S12 according to the Rasch model.
methodsRacked and stacked data from 151 dyads were analyzed according to the polytomous Rasch model.
resultsNotably, both the dyadic- and single-informant perspectives (i.e., racked and stacked data set-ups) showed measurement properties with minor deviations from the Rasch model according to fit statistics. However, most items had disordered thresholds and some problems with local dependency. Item hierarchies were similar in both set-ups and there was no differential item functioning (DIF) by role from the dyadic informant perspective. Four items showed DIF by informant role in the single-informant perspective.
conclusionsOur approach to handling dyadic data has shown both strengths and limitations in the evaluation of FSOC-S12, and the understanding of FSOC as a construct from the family's view of the family's ability as a whole (dyadic-informant perspective) and patient's and family member's separate views of the family's ability as a whole (single-informant perspective).
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