Evidence map›Paper›PMID 41302692›Full record

ArticleInternational journal of environmental research and public health2025

The Reduced Multi-Dimensional Health Literacy Scale: A First Bilingual Validation Using RASCH Analysis.

Heike Wieser, Waltraud Tappeiner, Fabio Vittadello

Abstract readValidation Study
In one paragraph

Article in International journal of environmental research and public health, 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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5 · Who and what money

Authors and funding

3 authors.

Heike WieserClaudiana Research, University Center for Health Professions Claudiana, 39100 Bolzano, Italy.ORCID 0000-0002-5271-4182
Waltraud TappeinerClaudiana Research, University Center for Health Professions Claudiana, 39100 Bolzano, Italy.ORCID 0000-0001-6165-2270
Fabio VittadelloExplora-Research and Statistical Analysis, 35010 Padova, Italy.ORCID 0000-0001-8542-5224

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to evaluate the reliability and validity of the reduced health literacy scale (HLS) of Ishikawa, as used in translated German and Italian versions.

methodsThe reduced HL scale was applied to a convenience sample of 100 persons with type 2 diabetes (DM2) in a province of Northern Italy. Rasch analysis was used to evaluate the psychometric measures of the nine items, regarding communicative and critical HL.

resultsPerson and item reliability was 0.87 for the German and 0.72 for the Italian version. Correlation values ranged from 0.55 to 0.76 (German version) and from 0.48 to 0.70 (Italian version). MNSQ values INFIT and OUTFIT expressed generally positive results. Possible redundancy was observed for one item in the German and Italian version, respectively, and in one for both versions. The values obtained in the analysis indicate a good fit, and no item had to be changed. In the German version, about 14% of persons demonstrate a high HL level (10% for the Italian version), while 39% expressed a low level of HL (56% for the Italian version).

conclusionsNo particularly critical items of the reduced HL scale emerged in both versions applying Rasch analysis. The use of the reduced scale (only nine items) has the advantage of being integrated into longer questionnaires and into more structured assessment instruments. Furthermore, it could also be used as a rapid screening tool, allowing health professionals to address patients and their HL needs in a more targeted way. However, more psychometric testing with a larger sample is required.

Indexed as

Diabetes Mellitus, Type 2Health LiteracyAdultAgedFemaleGermanyHumansItalyMaleMiddle AgedPsychometricsReproducibility of ResultsSurveys and QuestionnairesRasch analysisreduced health literacy scalereliabilitytype 2 diabetesvalidity

Identifiers

PMID41302692
PMCPMC12652834

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