Developing the evidence base of patient and public involvement in health and social care research: the case for measuring impactijcs_1020 628..632

School of Health and Social Studies, RCN Research Institute, University of Warwick, Coventry, UK Academic Rheumatology Group, University of Sheffield, Sheffield, UK School of Health and Related Studies, University of Sheffield, Sheffield, UK Centre for Citizen Participation, Brunel University and Chair of Shaping Our Lives, The National Service User and Disabled People’s Network, Brunel University, Uxbridge, UK Independent Researcher, London UK, formerly NCB Research Centre, National Children’s Bureau, London, UK School of Health and Social Studies, Royal College of Nursing Research Institute, University of Warwick, Coventry, Warwickshire, UK Research Management Consultant, Drakesyard Consultancy Limited, Cambridge, UK Department of Health and Applied Social Sciences, Faculty of Health and Life Sciences, University of the West of England, Bristol, UK School of Health and Social Studies, Royal College of Nursing Research Institute, University of Warwick, Coventry, Warwickshire, UK Diabetes UK, London, UK Self Employed Mental Health User Consultant, Worcester, UK Service User Research Enterprise (SURE), PO34, The Dand Goldberg Centre, Institute of Psychiatry, King’s College London, UK Centre for Innovation and Evaluation, Centre for Nursing & Midwifery Research, University of Salford, Salford, UK