City Research Online

Abstract

Background
Scaling innovations for people living with multiple long-term conditions (MLTCs or multimorbidity) remains challenging, particularly in primary care where organisational capacity, infrastructure, and local contexts vary widely. There is limited empirical understanding of the implementation work needed to navigate these contextual influences when scaling complex innovations across diverse settings. This study aimed to identify and explain the contextual conditions and adaptive implementation strategies that enabled or constrained scale-up of interventions for people with MLTCs in English primary care.

Methods
We conducted a theory-informed qualitative evaluation of four national projects that aimed to scale evidence-based interventions to improve the care of people with MLTCs in primary care. Projects ran between 2021 and 2024. Data included longitudinal interviews with project teams, document analysis, and a stakeholder workshop. Analysis was informed by the Consolidated Framework for Implementation Research (CFIR).

Results
Four key themes were identified: (1) Scaling requires relational infrastructure: relationships, trust, and relational continuity were central to gaining traction; (2) Supporting organisations and networks facilitate spread; (3) Engaging primary care practices depends on addressing uneven readiness for research and innovation; and (4) Local intelligence supports implementation at scale.

Conclusion
Scaling MLTC innovations in primary care is shaped by relational, organisational, and infrastructural factors, including uneven readiness for implementation. Scaling proven interventions requires technical support and investment in the people, relationships, and local infrastructures that support embedding across diverse primary care contexts.

Publication Type:	Article
Additional Information:	© The Author(s) 2026. Published by Oxford University Press on behalf of International Society for Quality in Health Care. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Publisher Keywords:	intelligence, investments, organizations, primary health care, traction, evidence-based practice, qualitative research, multimorbidity, implementation science, document analysis
Subjects:	R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Departments:	School of Health & Medical Sciences
SWORD Depositor:	Symplectic Administrator

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