Public involvement in mental health research enhances research quality. The use of citizen science methods in mental health research has been described as a conclusion of a movement towards increased public involvement; however, this field is in its early stages of development. Our objective was to create a theory of change (ToC) for how citizen science can be used to enhance mental health research quality.

Iterative consultation with the stakeholders of an existing citizen mental health science study, that is, change for citizen science to achieve co-production at scale (C-STACS: https://www.researchintorecovery.com/research/c-stacs/)

We co-developed a ToC through an iterative consultation with C-STACS stakeholders who were (a) representatives of mental health community organisations (n=10), individuals with public involvement experience (n=2) and researchers (n=5). In keeping with established ToC practice, entities were identified, including long-term impacts, outcomes needed to create an impact, stakeholder assumptions and indicators for tracking progress.

A desired primary long-term impact of greater co-production of research was identified between researchers and members of the public, which would create a secondary impact of enhancing public capacity to engage in citizen mental health science. We proposed long-term outcomes needed to enable this impact: (1) greater co-production of research objectives and pathways between researcher and the public, (2) greater embedment of citizen mental health science into funder processes (eg, the creation of specific funding calls for citizen mental health science proposals, (3) greater clarity on the boundaries between citizen science and other participatory approaches (eg, so that there is not loss of impact due to conceptual confusion between these, (4) increased knowledge around effective frameworks to enable mass public participation and (5) greater availability of technology platforms, enabling safe and accessible engagement with citizen mental health science projects.

The proposed ToC is grounded in the C-STACS project, but intended to be broadly applicable. It allows the continued formation of a community of practice around citizen mental health science and should be reviewed, as greater knowledge is developed on how citizen mental health science creates change.

For every 100 women having a vaginal birth, approximately four will experience a severe (third-degree or fourth-degree) perineal tear. Severe perineal tears are associated with significant short-term and long-term consequences if not recognised and repaired. There are global efforts to reduce incidence of severe perineal tears including initiatives to strengthen education and training of clinicians in perineal anatomy and perineal tear assessment and classification. This systematic review aimed to describe and evaluate the effectiveness of these initiatives.

Systematic review, reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

Medline (Ovid), CINAHL Complete (EBSCO), MIDIRS and EMBASE (Ovid) were searched through 15 February 2024.

Studies reporting simple or complex interventions aimed at improving the skills and knowledge of clinicians in perineal anatomy and/or the clinical assessment and classification of perineal tears were eligible.

Two reviewers independently screened studies for eligibility and appraised the quality of individual studies using the Cochrane Risk of Bias (RoB) 2.0 tool or Risk of Bias in Non-Randomised Studies of Interventions (ROBINS-I) tool.

In total, 7645 citations were screened and 39 studies included. We identified nine unique interventions including training programmes, short workshops and senior obstetrician supervision. Many studies were from high-income countries, in primary care settings and at high risk of bias.

Effective education included practical components, such as hands-on skills and training in perineal anatomy, assessment and classification, rather than senior supervision alone. Ongoing review of practice appears to be crucial for maintaining knowledge and skills. Future research should focus on interventions tailored to limited-resource settings, and the optimal length and intensity of training programmes to assess and classify perineal tears.

CRD42020185431.