Eligibility criteria
| Inclusion criteria | Exclusion criteria |
| Adults aged 18–64 years | Children aged 0–17 or adults aged over 64 years |
| Individuals from Asian/Asian British, Black/ African/Caribbean/Black British, mixed/multiple ethnic groups and Arab ethnic groups and Gypsies or Irish Travellers | Refugees, asylum seekers and all White British ethnicities other than Gypsies or Irish Travellers |
| Adults with no known mental disorder or diagnosed with a common mental disorder, such as anxiety and depression | Adults with severe mental illness and dementia |
| Community-centred interventions, that is, interventions that take place in a community setting, or in a health setting but delivered by the community and/or voluntary sector | Clinical interventions that involve treatment by a clinician in any setting |
| Study measures any domain or aspect of mental health and well-being | No outcome measures for mental health or well-being |
| All studies based on primary research | Abstracts, posters, books or chapters, editorials and letters |
| Study conducted in the UK | Study conducted outside of the UK |
| Published from 1990 onwards | Published before 1990 |
| Full-text research article available | No full-text research article available |