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Headline
This study found there was weak evidence of the effectiveness of school-based, disorder-specific interventions for the prevention of anxiety, depression and conduct disorder in children and young people.
Abstract
Background:
Schools in the UK increasingly have to respond to anxiety, depression and conduct disorder as key causes of morbidity in children and young people.
Objective:
The objective was to assess the comparative effectiveness of educational setting-based interventions for the prevention of anxiety, depression and conduct disorder in children and young people.
Design:
This study comprised a systematic review, a network meta-analysis and an economic evaluation.
Data sources:
The databases MEDLINE, EMBASE™ (Elsevier, Amsterdam, the Netherlands), PsycInfo® (American Psychological Association, Washington, DC, USA) and Cochrane Central Register of Controlled Trials (CENTRAL) were searched to 4 April 2018, and the NHS Economic Evaluation Database (NHS EED) was searched on 22 May 2019 for economic evaluations. No language or date filters were applied.
Main outcomes:
The main outcomes were post-intervention self-reported anxiety, depression or conduct disorder symptoms.
Review methods:
Randomised/quasi-randomised trials of universal or targeted interventions for the prevention of anxiety, depression or conduct disorder in children and young people aged 4–18 years were included. Screening was conducted independently by two reviewers. Data extraction was conducted by one reviewer and checked by a second. Intervention- and component-level network meta-analyses were conducted in OpenBUGS. A review of the economic literature and a cost–consequence analysis were conducted.
Results:
A total of 142 studies were included in the review, and 109 contributed to the network meta-analysis. Of the 109 studies, 57 were rated as having an unclear risk of bias for random sequence generation and allocation concealment. Heterogeneity was moderate. In universal secondary school settings, mindfulness/relaxation interventions [standardised mean difference (SMD) –0.65, 95% credible interval (CrI) –1.14 to –0.19] and cognitive–behavioural interventions (SMD –0.15, 95% CrI –0.34 to 0.04) may be effective for anxiety. Cognitive–behavioural interventions incorporating a psychoeducation component may be effective (SMD –0.30, 95% CrI –0.59 to –0.01) at preventing anxiety immediately post intervention. There was evidence that exercise was effective in preventing anxiety in targeted secondary school settings (SMD –0.47, 95% CrI –0.86 to –0.09). There was weak evidence that cognitive–behavioural interventions may prevent anxiety in universal (SMD –0.07, 95% CrI –0.23 to 0.05) and targeted (SMD –0.38, 95% CrI –0.84 to 0.07) primary school settings. There was weak evidence that cognitive–behavioural (SMD –0.04, 95% CrI –0.16 to 0.07) and cognitive–behavioural + interpersonal therapy (SMD –0.18, 95% CrI –0.46 to 0.08) may be effective in preventing depression in universal secondary school settings. Third-wave (SMD –0.35, 95% CrI –0.70 to 0.00) and cognitive–behavioural interventions (SMD –0.11, 95% CrI –0.28 to 0.05) incorporating a psychoeducation component may be effective at preventing depression immediately post intervention. There was no evidence of intervention effectiveness in targeted secondary, targeted primary or universal primary school settings post intervention. The results for university settings were unreliable because of inconsistency in the network meta-analysis. A narrative summary was reported for five conduct disorder prevention studies, all in primary school settings. None reported the primary outcome at the primary post-intervention time point. The economic evidence review reported heterogeneous findings from six studies. Taking the perspective of a single school budget and based on cognitive–behavioural therapy intervention costs in universal secondary school settings, the cost–consequence analysis estimated an intervention cost of £43 per student.
Limitations:
The emphasis on disorder-specific prevention excluded broader mental health interventions and restricted the number of eligible conduct disorder prevention studies. Restricting the study to interventions delivered in the educational setting may have limited the number of eligible university-level interventions.
Conclusions:
There was weak evidence of the effectiveness of school-based, disorder-specific prevention interventions, although effects were modest and the evidence not robust. Cognitive–behavioural therapy-based interventions may be more effective if they include a psychoeducation component.
Future work:
Future trials for prevention of anxiety and depression should evaluate cognitive–behavioural interventions with and without a psychoeducation component, and include mindfulness/relaxation or exercise comparators, with sufficient follow-up. Cost implications must be adequately measured.
Study registration:
This study is registered as PROSPERO CRD42016048184.
Funding:
This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 9, No. 8. See the NIHR Journals Library website for further project information.
Contents
- Plain English summary
- Scientific summary
- Chapter 1. Background
- Chapter 2. Methods for assessing effectiveness
- Chapter 3. Intervention and component categorisation
- Chapter 4. Effectiveness of educational setting-based interventions for preventing anxiety
- Chapter 5. Effectiveness of educational setting-based interventions for preventing depression
- Chapter 6. Additional primary outcomes and secondary outcomes from studies focusing on prevention of depression and/or anxiety
- Chapter 7. Effectiveness of educational setting-based interventions for preventing conduct disorder
- Chapter 8. Economic evaluation
- Chapter 9. Summary and interpretation of key findings
- Chapter 10. Discussion
- Acknowledgements
- References
- Appendix 1. Methods for systematic review and network meta-analysis
- Appendix 2. Results from systematic review
- Appendix 3. Network meta-analysis results
- Appendix 4. Full network meta-analysis and standard pairwise meta-analyses
- Appendix 5. Further time points: results from the intervention-level network meta-analysis
- Appendix 6. Exploring heterogeneity and publication bias
- Appendix 7. Additional outcomes
- Appendix 8. Economic evaluation
- Appendix 9. Comparison of findings with previous systematic reviews
- List of abbreviations
About the Series
Declared competing interests of authors: Sarah R Davies is the deputy managing editor for the Cochrane Psychosocial, Developmental and Learning Problems Review Group. Sarah E Hetrick is the joint co-ordinating editor of the Cochrane Common Mental Disorders Group and leads the Children and Young People Satellite group. Her position is part-funded by CureKids, a philanthropic organisation in New Zealand, and by Auckland Medical Research Foundation. David Gunnell and Nicky J Welton are supported by the National Institute for Health Research Biomedical Research Centre at University Hospitals Bristol NHS Foundation Trust and the University of Bristol.
Article history
The research reported in this issue of the journal was funded by the PHR programme as project number 15/49/08. The contractual start date was in October 2016. The final report began editorial review in January 2020 and was accepted for publication in December 2020. The authors have been wholly responsible for all data collection, analysis and interpretation, and for writing up their work. The PHR editors and production house have tried to ensure the accuracy of the authors’ report and would like to thank the reviewers for their constructive comments on the final report document. However, they do not accept liability for damages or losses arising from material published in this report.
Last reviewed: January 2020; Accepted: December 2020.
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