The conceptualisation and measurement of social frailty in older people: an umbrella review.

Background: The social domain of frailty is often poorly defined or missing from measures of frailty. The literature is still inconclusive on the nature and scope of social frailty, although studies indicate that it has a substantial impact on disability and mortality outcomes.

Aims: This Umbrella Review aimed to synthesise concepts and measures of social frailty.

Methods: A search for reviews was performed in Web of Science, CINAHL, SOCINDEX, Medline, PsychoINFO and COSMIN databases. This Umbrella Review was conducted and reported with reference to the Joanna Briggs Institute (JBI) Reviewer's Manual. The JBI Critical Appraisal Checklist for Systematic Review was used to assess the quality of studies.

Results: Sixteen reviews were included. The concept of social frailty was summarised as weakness in a person's social infrastructure compounded by a declining ability to change their circumstances. Forty-two measures of social frailty were identified which included a total of 228 items relating to social frailty. These were grouped into nine domains, of which participation in social activities was most commonly included within measures.

Conclusion: The use of diverse indicators creates a challenge for the measurement of social frailty. Their limited use in health and social care practice undermines the practical utility of the concept. This review helps to provide conceptual clarity and a platform for the development and validation of a robust social frailty measure which will facilitate the identification of people at risk and target interventions to prevent or alleviate the impact of social frailty on older people.