Evidence map›Paper›PMID 39460318›Full record

ReviewVaccines2024

Mobile Phone Text Message Reminders to Improve Vaccination Uptake: A Systematic Review and Meta-Analysis.

Gail Erika Louw, Ameer Steven-Jorg Hohlfeld, Robyn Kalan, Mark Emmanuel Engel

Registry-linked trialAbstract readReview
In one paragraph

Review in Vaccines, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07659470 (RANDOMIZED CONTROLLED TRIAL OF THE USE OF TEXT MESSAGE REMINDERS TO INCREASE PNEUMOCOCCAL VACCINATION COVERAGE IN ADULTS AGED 65 YEARS IN CHILE.), which is not on this map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing 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.

NCT07659470 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Randomized controlled trial of the use of text message reminders to increase pneumococcal vaccination coverage in adults aged 65 years in chile.

TypeinterventionalSponsorPablo Tomás Valenzuela GarcíaRan2026 to 2026Enrolled43,000ConditionsPneumococcal Infections, Immunization Programs, Vaccination Coverage, Text Messaging (Intervention)ArmsWhatsApp text message reminder for pneumococcal vaccination
3 · Its place in the literature

Who cites it

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

  1. Pooled it
  2. Trial
  3. Understanding HPV Vaccine Uptake Among American Indian and Alaska Native College Students: A Scoping Review.International journal of environmental research and public health · 2026
    Article
  4. Review
  5. Article
  6. Prevalence and Drivers of Missed Healthcare Appointments in Poland: Insights From a 2025 Survey.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
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

4 authors.

Gail Erika LouwCape Heart Institute, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.
Ameer Steven-Jorg HohlfeldHealth Systems Research Unit, South African Medical Research Council, Tygerberg 7501, South Africa.ORCID 0000-0003-1710-1265
Robyn KalanCape Heart Institute, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.
Mark Emmanuel EngelCape Heart Institute, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.ORCID 0000-0002-1334-8829

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionMobile phone text message reminders (MPTMRs) have been implemented globally to promote vaccination uptake and recall rates. This systematic review evaluated the effectiveness of MPTMRs on vaccination recall rates.

methodsWe included randomized controlled trials of caregivers of children, adolescents, or adults who received MPTMRs for improving vaccine uptake and recall visits. We searched the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, and Scopus to identify relevant studies published up to 24 January 2024. We used Cochrane's Risk of Bias tool to assess the included studies and reported the results as risk ratios with 95% confidence intervals, using a random effects model.

resultsWe identified 25 studies for inclusion. All studies were assessed as having a low risk of bias. The evidence supports MPTMRs for improving vaccination uptake compared to usual care (RR = 1.09 [95%CI: 1.06, 1.13], I

conclusionsMPTMRs have a positive effect, albeit relatively small, on vaccination uptake. These findings may assist public health practitioners, policymakers, and vaccine researchers in evidence-based decision making that focuses on MPTMRs and their impact on vaccination coverage.

Indexed as

text message remindersvaccinationvaccination coveragevaccination uptake

Identifiers

PMID39460318
PMCPMC11511517

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.