Experiences of participant and public involvement in an international randomized controlled trial for people living with dementia and their informal caregivers.

Background: This study was initiated and co-designed by a Participant and Public Involvement (PPI) group attached to HOMESIDE, a randomized controlled trial that investigated music and reading interventions for people living with dementia and their family caregivers across five countries: Australia, Germany, Norway, Poland, and the UK. The aim was to capture experiences of PPI across the five countries, explore the benefits and challenges of PPI in dementia research, and identify contributions made to the study.

Methods: We surveyed PPI members and academic researchers who collaborated on the HOMESIDE study.