Validation of a culturally adapted Swedish-language version of the Death Literacy Index

Therese Johansson, Åsa Olsson, Carol Tishelman, Kerrie Noonan, Rosemary Leonard, Lars E Eriksson, Ida Goliath and Joachim Cohen

PLOS ONE, 2023, vol. 18, issue 11, 1-18

Abstract: The death literacy index (DLI) was developed in Australia to measure death literacy, a set of experience-based knowledge needed to understand and act on end-of-life (EOL) care options but has not yet been validated outside its original context. The aim of this study was to develop a culturally adapted Swedish-language version of the DLI, the DLI-S, and assess sources of evidence for its validity in a Swedish context. The study involved a multi-step process of translation and cultural adaptation and two validation phases: examining first content and response process validity through expert review (n = 10) and cognitive interviews (n = 10); and second, internal structure validity of DLI-S data collected from an online cross-sectional survey (n = 503). The psychometric evaluation involved analysis of descriptive statistics on item and scale-level, internal consistency and test-retest reliability, and confirmatory factor analysis. During translation and adaptation, changes were made to adjust items to the Swedish context. Additional adjustments were made following findings from the expert review and cognitive interviews. The content validity index exceeded recommended thresholds (S-CVIAve = 0.926). The psychometric evaluation provided support for DLI-S’ validity. The hypothesized six-factor model showed good fit (χ2 = 1107.631 p

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0295141

DOI: 10.1371/journal.pone.0295141

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