Table 1. Literature review search strategy.

Phase	Search details
Phase 1 Database and library searches (16-27 Oct 2014)	Bibliographic Databases (12): Applied Social Sciences Index and Abstracts (ASSIA), Cochrane Library, IngentaConnect, JISC Journal Archives, NHS Evidence Search, OCLC FirstSearch - Article First, OvidSP - Social Policy and Practice (includes Centre for Policy on Ageing’s database AgeInfo), PubMed, Scopus, Social Services Abstracts, Web of Science Core Collection, Web of Science MedLine Websites/internet search engines: British Library e-theses online service (EThOS), Open Grey, Social Care Online, WorldCat Dissertations and Theses Libraries: King's College (including PURE research portal), British Library, Senate House
Phase 2 Hand-searched (6-10 Nov 2014)	Websites of relevance, research repositories and journals: Age UK, Brunel Institute for Ageing Studies, DEMOS, Independent Age, Institute for Public Policy Research, Joseph Rowntree Foundation, King’s Fund, Lancaster Centre for Ageing Research, National Development Team for Inclusion, National Centre for Social Research, Oxford Institute of Population Ageing, Personal Social Services Research Unit (Manchester), Personal Social Services Research Unit (LSE), ResearchGate, Research into Practice for Adults, Personal Social Services Research Unit (Kent), Sheffield Institute for Studies on Ageing, Social Care Workforce Research Unit (SCWRU), Social Science Research Network, Social Policy Research Unit (York),Southampton Centre for Research into Ageing, Swansea Centre for Innovative Ageing Peer-reviewed journals hand-searched: Ageing & Society, The Gerontologist, Health & Social Care in the Community, International Journal of Integrated Care, Quality in Ageing and Older Adults, Research Policy and Planning, Social Policy & Society, Working with Older People
Phase 3 Alerts set up (Nov 2014)	Weekly Google Scholar alert and alerts to tables of contents of above journals and Journal of Applied Gerontology, British Journal of Social Work, Critical Social Policy, Journal of Gerontological Social Work, Geriatrics and Gerontology International, Journal of Integrated Care, Journal of Public Administration, Research and Policy and Sociology of Health and Illness.
Search (Aug 2017)	Search of NICE’s evidence database undertaken.