Background:

Interorganisational collaboration is currently being promoted to improve the performance of NHS providers. However, up to now, there has, to the best of our knowledge, been no systematic attempt to assess the effect of different approaches to collaboration or to understand the mechanisms through which interorganisational collaborations can work in particular contexts.

Objectives:

Our objectives were to (1) explore the main strands of the literature about interorganisational collaboration and to identify the main theoretical and conceptual frameworks, (2) assess the empirical evidence with regard to how different interorganisational collaborations may (or may not) lead to improved performance and outcomes, (3) understand and learn from NHS evidence users and other stakeholders about how and where interorganisational collaborations can best be used to support turnaround processes, (4) develop a typology of interorganisational collaboration that considers different types and scales of collaboration appropriate to NHS provider contexts and (5) generate evidence-informed practical guidance for NHS providers, policy-makers and others with responsibility for implementing and assessing interorganisational collaboration arrangements.

Design:

A realist synthesis was carried out to develop, test and refine theories about how interorganisational collaborations work, for whom and in what circumstances.

Data sources:

Data sources were gathered from peer-reviewed and grey literature, realist interviews with 34 stakeholders and a focus group with patient and public representatives.

Review methods:

Initial theories and ideas were gathered from scoping reviews that were gleaned and refined through a realist review of the literature. A range of stakeholder interviews and a focus group sought to further refine understandings of what works, for whom and in what circumstances with regard to high-performing interorganisational collaborations.

Results:

A realist review and synthesis identified key mechanisms, such as trust, faith, confidence and risk tolerance, within the functioning of effective interorganisational collaborations. A stakeholder analysis refined this understanding and, in addition, developed a new programme theory of collaborative performance, with mechanisms related to cultural efficacy, organisational efficiency and technological effectiveness. A series of translatable tools, including a diagnostic survey and a collaboration maturity index, were also developed.

Limitations:

The breadth of interorganisational collaboration arrangements included made it difficult to make specific recommendations for individual interorganisational collaboration types. The stakeholder analysis focused exclusively on England, UK, where the COVID-19 pandemic posed challenges for fieldwork.

Conclusions:

Implementing successful interorganisational collaborations is a difficult, complex task that requires significant time, resource and energy to achieve the collaborative functioning that generates performance improvements. A delicate balance of building trust, instilling faith and maintaining confidence is required for high-performing interorganisational collaborations to flourish.

Future work:

Future research should further refine our theory by incorporating other workforce and user perspectives. Research into digital platforms for interorganisational collaborations and outcome measurement are advocated, along with place-based and cross-sectoral partnerships, as well as regulatory models for overseeing interorganisational collaborations.

Study registration:

The study is registered as PROSPERO CRD42019149009.

Funding:

This project was funded by the National Institute for Health and Care Research (NIHR) Health and Social Care Delivery Research programme and will be published in full in Health and Social Care Delivery Research; Vol. 11, No. 6. See the NIHR Journals Library website for further project information.

What was the question?:

How can the collaboration between health-care providers be improved?

What did we do?:

There are continuing concerns about poor patient care across the NHS. One of the ways in which governments have tried to solve these issues is by getting services to work together, rather than separately, to solve any problems. The aim of our review is to learn about how, why and when different approaches to working together – which we call interorganisational collaboration – can be used to improve the performance of NHS providers. We reviewed published evidence and carried out interviews with NHS staff. We also carried out interviews and a focus group with patient and public representatives.

What did we find?:

Our review finds that interorganisational collaborations can work well when a series of elements are in place, which includes the need to build trust between everyone involved. Having a belief in the collaboration is also needed to help inspire others to get involved. To try and reduce possible problems, setting priorities and having clear methods to show how improvements can be achieved are important, as well as having an agreed contract in place to ensure that any conflicts are resolved.

If done well, collaboration can improve resource allocation, coordination, communication and shared learning about best practice.

What does this mean?:

Our review provides valuable evidence of how different approaches to interorganisational collaboration can be used by NHS providers to work together to improve services in different situations. Our review provides different options for organisations to reflect on how well they are collaborating, which includes the involvement of key stakeholders, such as patients, the public and communities.

Article history

The research reported in this issue of the journal was funded by the HSDR programme or one of its preceding programmes as project number NIHR127430. The contractual start date was in October 2019. The final report began editorial review in October 2021 and was accepted for publication in June 2022. The authors have been wholly responsible for all data collection, analysis and interpretation, and for writing up their work. The HSDR editors and production house have tried to ensure the accuracy of the authors’ report and would like to thank the reviewers for their constructive comments on the final report document. However, they do not accept liability for damages or losses arising from material published in this report.