Evidence map›Paper›PMID 30158221›Full record

Trial reportBMJ open2018

Differential intervention effectiveness of a universal school-based resilience intervention in reducing adolescent substance use within student subgroups: exploratory assessment within a cluster-randomised controlled trial.

Rebecca Kate Hodder, Megan Freund, Jenny Bowman, Luke Wolfenden, Elizabeth Campbell, Julia Dray, Christophe Lecathelinais, Christopher Oldmeadow, John Attia, John Wiggers

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in BMJ open, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
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

10 authors.

Rebecca Kate HodderHunter New England Population Health, Hunter New England Local Health District, Wallsend, New South Wales, Australia.ORCID 0000-0003-3730-0907
Megan FreundSchool of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia.
Jenny BowmanHunter Medical Research Institute, Newcastle, New South Wales, Australia.
Luke WolfendenHunter New England Population Health, Hunter New England Local Health District, Wallsend, New South Wales, Australia.ORCID 0000-0002-6178-3868
Elizabeth CampbellHunter New England Population Health, Hunter New England Local Health District, Wallsend, New South Wales, Australia.
Julia DrayHunter New England Population Health, Hunter New England Local Health District, Wallsend, New South Wales, Australia.
Christophe LecathelinaisHunter New England Population Health, Hunter New England Local Health District, Wallsend, New South Wales, Australia.
Christopher OldmeadowClinical Research Design, IT, and Statistical Support (CReDITSS), Hunter Medical Research Institute, Wallsend, New South Wales, Australia.
John AttiaClinical Research Design, IT, and Statistical Support (CReDITSS), Hunter Medical Research Institute, Wallsend, New South Wales, Australia.
John WiggersHunter New England Population Health, Hunter New England Local Health District, Wallsend, New South Wales, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesInterventions addressing the individual and environmental protective factors of adolescents are suggested to have potential for reducing adolescent substance use. While universally delivered school-based substance use prevention interventions are common, previous studies have suggested variable effectiveness by subgroups of students. An exploratory study was undertaken to examine the differential effectiveness of a universal school-based resilience intervention on adolescent substance use and protective factors according to their sociodemographic and previous substance use.

designSecondary analysis of data from a cluster-randomised controlled trial.

setting32 Australian secondary schools.

participantsCohort of grade 7 students (n=3155) followed up in grade 10 (aged 15-16 years; 2014; n=2105).

interventionThree-year universal school-based intervention implemented by school staff that targeted a range of student resilience protective factors (2012-2014). MEASUREMENTS: Primary outcomes included: tobacco (recent, number of cigarettes) and alcohol (recent, 'risk' and number of drinks) use, and secondary outcomes included: marijuana (recent) and other illicit substance (recent) use, and aggregate individual and environmental protective factor scores. Generalised and linear mixed models examined interactions between treatment and student subgroups (gender; socioeconomic disadvantage (low/high); geographic location (major city/inner regional/outer regional-remote); and previous substance use (non-user/user)) at follow-up (36 models).

resultsAnalysis of student follow-up data showed no differential intervention effect for any substance use or protective factor outcome for any subgroup, with the exception of one differential effect found by socioeconomic status for the outcome of mean number of cigarettes smoked by recent smokers (p=0.003). There was no evidence of an intervention effect within the low (mean difference (MD) -12.89, 95% CI -26.00 to 0.23) or high (MD 16.36, 95% CI -1.03 to 33.76) socioeconomic subgroups.

conclusionsNo evidence of an intervention effect on substance use and protective factors was found according to student subgroups defined by sociodemographic characteristics or previous substance use. TRIAL REGISTRATION NUMBER: ACTRN12611000606987.

Indexed as

Adolescent BehaviorResilience, PsychologicalSchool Health ServicesSchoolsAdolescentAlcohol DrinkingAustraliaCigarette SmokingFemaleHumansMaleMarijuana SmokingPovertySocial ClassStudentsSubstance-Related Disordersadolescentsdifferential effects of universal interventionsresilienceschool-based drug preventiontobacco, alcohol and drug use prevention

Identifiers

PMID30158221
PMCPMC6119444

What OpenQuestion holds

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LicenceCC BY-NC
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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.