Evidence map›Paper›PMID 30877457›Full record

SynthesisJournal of general internal medicine2019

The Role of Health Literacy in Diabetes Knowledge, Self-Care, and Glycemic Control: a Meta-analysis.

Laura Marciano, Anne-Linda Camerini, Peter J Schulz

Registry-linked trialAbstract readMeta-AnalysisReview
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Journal of general internal medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05291026 (Evaluation of mHealth Intervention to Improve Medication Adherence in Type 2 Diabetes in Nigeria), which is not on this map. Cited by 165 papers.

0numbers the graph read from it
0cells of the map it votes in
165citing papers in PubMed
–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.

NCT05291026 nacompletednot on this map

Evaluation of mHealth Intervention to Improve Medication Adherence in Type 2 Diabetes in Nigeria: a Randomized Controlled Trial

TypeinterventionalSponsorObafemi Awolowo UniversityRan2018 to 2019Enrolled120ConditionsDiabetes MellitusArmsmobile phone-based health information
3 · Its place in the literature

Who cites it

165 citing papers in PubMed.

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105 more citing papers are in PubMed but not listed here.

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

3 authors.

Laura MarcianoFaculty of Communication Sciences, Institute of Communication and Health, Università della Svizzera italiana, Via Giuseppe Buffi 13, 6904, Lugano, Switzerland. laura.marciano@usi.ch.
Anne-Linda CameriniFaculty of Communication Sciences, Institute of Communication and Health, Università della Svizzera italiana, Via Giuseppe Buffi 13, 6904, Lugano, Switzerland.
Peter J SchulzFaculty of Communication Sciences, Institute of Communication and Health, Università della Svizzera italiana, Via Giuseppe Buffi 13, 6904, Lugano, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEmpirical evidence on how health literacy affects diabetes outcomes is inconsistent. The purpose of this meta-analysis was to quantitatively summarize the findings on the associations between health literacy and diabetes knowledge, self-care activities, and glycemic control as disease-related outcomes, with specific focus on the type of health literacy assessment. DATA SOURCES: Nine databases (MEDLINE, CINAHL, Communication and Mass Media Complete, PsychInfo, PsychArticles, Psychology and Behavioral Sciences Collection, ERIC, Sociology, Embase) were searched for peer-reviewed original research articles published until 31 March 2018.

methodsStudies with type 1 and/or type 2 diabetes patients aged 18 or older, providing a calculable baseline effect size for functional health literacy and diabetes knowledge, self-care activities, or HbA1C were included.

resultsThe meta-analysis includes 61 studies with a total of 18,905 patients. The majority were conducted in the USA, on type 2 diabetes patients, and used the S-TOFHLA as a performance-based or the BHLS as a perception-based measure of functional health literacy. Meta-analytic results show that all three outcomes are related to health literacy. Diabetes knowledge was best predicted by performance-based health literacy measures, self-care by self-report measures, and glycemic control equally by both types of health literacy assessment. DISCUSSION: Health literacy plays a substantial role in diabetes knowledge. Findings for the role of health literacy in self-care and glycemic control remain heterogeneous, partly due to the type of health literacy assessment (performance- vs. perception-based). This has implications for the use of health literacy measures in clinical settings and original research. This meta-analysis was limited to functional health literacy and, due to the paucity of studies, did not investigate the role of other dimensions including communicative and critical health literacy.

Indexed as

Health Knowledge, Attitudes, PracticeBlood GlucoseDiabetes Mellitus, Type 2Glycemic IndexHealth LiteracyHumansSelf CareBlood Glucosediabetesglycemic controlhealth literacyknowledgemeta-analysisself-care

Identifiers

PMID30877457
PMCPMC6544696

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Registered trials

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.