Protocol for a Mixed Methods and Multi-site Assessment of the Implementation Process and Outcomes of a New Community-based Frailty Programme

Background: Frailty is increasing in prevalence internationally with population ageing. Frailty can be managed or even reversed through community-based interventions delivered by a multi-disciplinary team of professionals, but to varying degrees of effectiveness. However, many of the implementation insights of these care models are contextual, and may not be applicable in different cultural contexts. The Geriatric Service Hub (GSH) is a novel frailty care programme in Singapore, that includes key components of frailty care such as comprehensive geriatric assessments, care coordination and the assembly of a multidisciplinary team. The aim of this study is to gain insights on the factors influencing the implementation approaches adopted by five participating sites, and the effectiveness of the programme.

Methods: We will adopt a mixed-methods approach that includes a qualitative evaluation among key stakeholders and participants taking part in the programme, through in depth-interviews and focus group discussions. The main topics covered includes factors that affected the development and implementation of each programme, operations and other contextual factors that influenced implementation outcomes. The quantitative evaluation (1) monitors each programme's care process through quality indicators, (2) a multiple-time point survey study to compare programme participants' pre- and post- outcomes on patient engagement (collaboRATE and 13-item Patient Activation Measure;PAM), healthcare experiences (Consumer Assessment of Healthcare Providers and System Clinician and Group Survey Version 3.0; CG-CAHPS), health status and quality of life (Barthel Index of Activities of Daily Living, fall counts, the EuroQol questionnaire and the Control, Autonomy, Self-realization and Pleasure scale; CASP-19), impact on caregivers (Zarit Burden Interview) and societal costs (Client Service Receipt Inventory). (3) A retrospective cohort design to assess healthcare and cost utilisation between participants of the programme and a propensity score matched comparator group.

Discussion: The GSH sites share a common goal to increasing accessibility of essential services to frail older adults, and providing comprehensive care. The results of this evaluation study will provide valuable evidence to the impact and effectiveness of the GSH, and inform to the design of similar programmes targeting frail older adults.