Evidence map›Paper›PMID 31200647›Full record

ArticleBMC medical research methodology2019

Validation of the short assessment of health literacy (SAHL-D) and short-form development: Rasch analysis.

A J Woudstra, C S Meppelink, H Pander Maat, J Oosterhaven, M P Fransen, A L Dima

Abstract readValidation Study
In one paragraph

Article in BMC medical research methodology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

A J WoudstraDepartment of Public Health, Amsterdam Public Health research institute, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. a.j.woudstra@amc.uva.nl.ORCID 0000-0001-6685-6168
C S MeppelinkAmsterdam School of Communication Research, University of Amsterdam, Amsterdam, The Netherlands.
H Pander MaatUtrecht University of Linguistics OTS, Utrecht University, Utrecht, The Netherlands.
J OosterhavenResearch Group Lifestyle and Health, University of Applied Sciences Utrecht, Utrecht, 3584 CS, The Netherlands.
M P FransenDepartment of Public Health, Amsterdam Public Health research institute, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
A L DimaAmsterdam School of Communication Research, University of Amsterdam, Amsterdam, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAccurate measurement of health literacy is essential to improve accessibility and effectiveness of health care and prevention. One measure frequently applied in international research is the Short Assessment of Health Literacy (SAHL). While the Dutch SAHL (SAHL-D) has proven to be valid and reliable, its administration is time consuming and burdensome for participants. Our aim was to further validate, strengthen and shorten the SAHL-D using Rasch analysis.

methodsAvailable cross-sectional SAHL-D data was used from adult samples (N = 1231) to assess unidimensionality, local independence, item fit, person fit, item hierarchy, scale targeting, precision (person reliability and person separation), and presence of differential item functioning (DIF) depending on age, gender, education and study sample.

resultsThirteen items for a short form were selected based on item fit and DIF, and scale properties were compared between the two forms. The long form had several items with DIF for age, gender, educational level and study sample. Both forms showed lower measurement precision at higher health literacy levels.

conclusionsThe findings support the validity and reliability of the SAHL-D for the long form and the short form, which can be used for a rapid assessment of health literacy in research and clinical practice.

Indexed as

Health Knowledge, Attitudes, PracticeAdultFemaleHealth EducationHealth LiteracyHumansMaleMiddle AgedModels, TheoreticalPsychometricsPublic HealthSurveys and QuestionnairesHealth literacyMeasurementPublic healthRaschSAHL-DShort-form

Identifiers

PMID31200647
PMCPMC6567391

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.