Trial reportPrevention science : the official journal of the Society for Prevention Research2018
Can Teenage Men Be Targeted to Prevent Teenage Pregnancy? A Feasibility Cluster Randomised Controlled Intervention Trial in Schools.
Trial report in Prevention science : the official journal of the Society for Prevention Research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02092480 (Increasing Boys' and Girls' Intention to Avoid Teenage Pregnancy), which is not on this map. Cited by 15 papers, 4 of them syntheses that pooled 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.
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.
Increasing Boys' and Girls' Intention to Avoid Teenage Pregnancy: Feasibility Trial of an Interactive Video-drama Based Intervention in Post-primary Schools in Northern Ireland
Who cites it
15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 30 citations in OpenAlex.
- Web-based sexual and reproductive health education for adolescents aged 10-17 years: a systematic review and meta-analysis.BMJ paediatrics open · 2025Pooled it
- Adolescent condom use in Southern Africa: narrative systematic review and conceptual model of multilevel barriers and facilitators.BMC public health · 2021Pooled it
- Adaptation of a gender-transformative sexual and reproductive health intervention for adolescent boys in South Africa and Lesotho using intervention mapping.Global health action · 2021Pooled it
- Gender-transformative programming with men and boys to improve sexual and reproductive health and rights: a systematic review of intervention studies.BMJ global health · 2020Pooled it
- Effects of gender-transformative relationships and sexuality education to reduce adolescent pregnancy (the JACK trial): a cluster-randomised trial.The Lancet. Public health · 2022Trial
- Engaging parents in digital sexual and reproductive health education: evidence from the JACK trial.Reproductive health · 2020Trial
- Building multi-sectoral alliances to co-design and pilot a gender-transformative comprehensive sexuality education intervention for adolescents: the case of Si Yo Fuera Juan in Uruguay.Reproductive health · 2026Article
- Grade nine learners' experiences on Ubuntu workshop in Mopani District of South Africa: An appreciative inquiry.Health SA = SA Gesondheid · 2025Article
- Social Validity in Spain of the Mantente REAL Prevention Program for Early Adolescents : Social Validity of Mantente Real in Spain.Journal of prevention (2022) · 2023Article
- Systematic review of the characteristics of school-based feasibility cluster randomised trials of interventions for improving the health of pupils in the UK.Pilot and feasibility studies · 2022Review
- [Development of a comprehensive public policy for adolescent pregnancy prevention in UruguayDesenvolvimento de uma política pública abrangente de prevenção da gravidez na adolescência no Uruguai].Revista panamericana de salud publica = Pan American journal of public health · 2021Article
- Geographic variation and risk factors for teenage pregnancy in Uganda.African health sciences · 2020Article
- Developing a Sexual Health Promotion Intervention With Young Men in Prisons: A Rights-Based Participatory Approach.JMIR research protocols · 2019Article
- Interventions addressing men, masculinities and gender equality in sexual and reproductive health and rights: an evidence and gap map and systematic review of reviews.BMJ global health · 2019Article
- Digital knowledge translation tools for sexual and reproductive health information to adolescents: an evidence gap-map.Therapeutic advances in reproductive healthReview
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 6 institutions in 1 country.
Funding
Abstract
The World Health Organisation advocates a direct focus on adolescent men in reducing adolescent pregnancy; however, no trials have been conducted. This trial (ISRCTN11632300; NCT02092480) determines whether a novel Relationship and Sexuality Educational intervention, If I Were Jack, is acceptable and feasible to implement in mixed sex UK classrooms. The intervention is a teacher-delivered intervention that emphasises male alongside female responsibility in preventing unintended pregnancies and is designed to prevent unprotected sex. The trial was a parallel-group cluster randomised controlled feasibility trial with embedded process and cost evaluation in eight secondary schools (unit of randomisation) among 831 pupils (mean age 14) in Northern Ireland, alongside a qualitative evaluation of transferability in ten schools in Scotland, Wales and England. The sampling strategy was a maximum variation quota sample designed to capture a range of school management types. Four schools were randomised to each arm and the control arm continued with usual practice. Study duration was 12 months (from November 2014), with follow-up 9 months post-baseline. Results demonstrated that the intervention was acceptable to schools, pupils and teachers, and could be feasibly implemented, cost-effectively, with minor enhancements. The between-group difference in incidence of unprotected sex (primary outcome at pupil level) of 1.3% (95% CI 0.5-2.2) by 9 months demonstrated a potential effect size consistent with those reported to have had meaningful impact on teenage pregnancy. The study responds to global health policy for a paradigm shift towards inclusion of men in the achievement of sexual and reproductive health goals in a practical way by demonstrating that a gender-sensitive as well as a gender transformative intervention targeting males to prevent teenage pregnancy is acceptable to adolescent men and women and implementable in formal education structures. If I Were Jack now merits further effectiveness testing.
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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.