Evidence map›Paper›PMID 42531205›Full record

Trial reportPloS one2026

Growing up without violence (GWV): Results of a cluster randomised trial of a school-based intervention preventing adolescent sexual abuse and exploitation in Brazil.

Ligia Kiss, Marto Leal, Ana Paula Portella, Heloína Paiva, Agnese Iuliano, Malini Pires, Helen Shipman, Elizabeth Anderson, Yuki Lo, Ligia Kerr and 4 more

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

14 authors.

Ligia KissAssociate Professor in Social Epidemiology, Institute for Global Health, University College London, London, United Kingdom.ORCID https://orcid.org/0000-0002-3334-7110
Marto LealFundação Oswaldo Cruz Ceará, Fortaleza, Brazil.
Ana Paula PortellaResearch Coordinator, consultant, Department of Technology and Communication, Universidade Católica de Pernambuco, Recife, Brazil.
Heloína PaivaResearch Fellow, consultant, Universidade Católica de Pernambuco, Recife, Brazil.
Agnese IulianoResearch Fellow, Institute for Global Health, University College London, London, United Kingdom.
Malini PiresResearch Fellow, consultant, Institute for Global Health, University College London, London, United Kingdom.
Helen ShipmanResearch Consultant, Research and Evaluation, Freedom Fund, London, United Kingdom.
Elizabeth AndersonHead of Research and Evaluation, Research and Evaluation, Freedom Fund, London, United Kingdom.
Yuki LoHead of Research and Evaluation, Research and Evaluation, Freedom Fund, London, United Kingdom.
Ligia KerrProfessor of Epidemiology, Universidade Federal do Ceará, Fortaleza, Brazil.
Carl KendallVisiting Professor of Medical Anthropology and Community Health, Universidade Federal do Ceará, Fortaleza, Brazil.
Dario BritoAssistant Professor, Universidade Católica de Pernambuco, Recife, Brazil.
Marina BarrosAssistant Professor, Universidade Católica de Pernambuco, Recife, Brazil.ORCID https://orcid.org/0000-0002-3544-0538
Baptiste LeurentAssociate Professor in Medical Statistics at the Department of Statistical Science, University College London, London, United Kingdom.ORCID https://orcid.org/0000-0001-6420-6567

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionChild sexual abuse and exploitation (CSAE) are pervasive problems that significantly affect the health of children and adolescents. This paper presents the results of a cluster randomised controlled trial (cRCT) evaluating a school-based intervention designed to prevent CSAE in Brazil through education.

methodsWe conducted a two-arm cRCT with parallel assignment in two Brazilian municipalities. Sixty schools were randomly allocated to intervention and control arms (30 per group) using stratified randomisation based on municipality and school type (municipal and state-run). We invited 50 randomly selected students, aged 12-17, from each school to complete surveys at baseline and endline. Teachers enrolled in GWV training completed an implementation questionnaire. Our primary analysis focused on a cross-sectional comparison of students' CSAE risk knowledge between control and intervention schools.

resultsWe found no statistically significant difference in adolescents' CSAE risk knowledge between the study arms (adjusted mean difference: 0.02, 95% CI -0.19 to 0.23, p = 0.87). There was borderline evidence of interaction by gender, with a greater difference in knowledge scores among girls (p = 0.032). No significant association was found between the number of GWV components implemented and knowledge scores. DISCUSSION: Several factors may contribute to this result: the intervention might not have been implemented with sufficient fidelity or intensity, the true effect of GWV could be minimal and below the study's detection threshold, the intervention may have influenced outcomes that were not measured, or the intervention may simply lack effectiveness. Further rigorous evaluations and implementation studies are essential to ensure that resources are directed toward effective strategies.

trial registrationThe American Economic Association's registry for randomised controlled trials (AEA RCT Registry). RCT ID: AEARCTR-0011299, https://www.socialscienceregistry.org/trials/11299.

Indexed as

Child Abuse, SexualSchool Health ServicesAdolescentBrazilChildCluster AnalysisCross-Sectional StudiesFemaleHealth Knowledge, Attitudes, PracticeHumansMaleSchoolsStudentsSurveys and Questionnaires

Identifiers

PMID42531205
PMCPMC13422835

What OpenQuestion holds

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LicenceCC BY
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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.