IMP2ART: development of a multi-level programme theory integrating the COM-B model and the iPARIHS framework, to enhance implementation of supported self-management of asthma in primary care
Implementation Science Communications volume 4, Article number: 136 (2023)
Supported asthma self-management, incorporating an asthma action plan and annual clinical review, has been recommended by UK/global guidelines for over three decades. However, implementation remains poor, as only around a third of individuals receive basic asthma care, according to the UKs leading respiratory charity Asthma and Lung UK. A systematic review of implementation studies recommended that a whole systems approach targeting patients, healthcare professional education, and organisations is needed to improve implementation of supported asthma self-management in primary care. The IMPlementing IMProved Asthma self-management as RouTine (IMP2ART) is a national Hybrid-II implementation cluster randomised controlled trial that aims to evaluate such an approach. This paper describes the development of the implementation strategy for IMP2ART with particular focus on the integration of multiple level theories.
The Medical Research Council design and evaluation of complex interventions framework and the Person-Based Approach to intervention development were used as guidance for stages of strategy development. Specifically, we (i) set up a multidisciplinary team (including practicing and academic clinicians, health psychologists, public health and patient colleagues), (ii) reviewed and integrated evidence and theory, (iii) developed guiding principles, (iv) developed prototype materials, and (v) conducted a pre-pilot study before final refinement.
The implementation strategy included resources for patients, team-based and individual healthcare professional education, practice audit and feedback, and an asthma review template, as well as a facilitator role accessible to primary care practices for 12 months. The synthesis of the integrated Promoting Action on Research Implementation in Health Services (iPARIHS) and Capability, Opportunity, Motivation and Behaviour (COM-B) frameworks led to an evolved framework bringing together important implementation and behaviour change elements which will be used as a basis for the study process evaluation.
A description of rigorous implementation strategy development for the IMP2ART study is provided along with newly theorised integration of implementation and behaviour change science which may be of benefit to others targeting implementation in primary care.
ISRCTN15448074. Registered on 2nd December 2019.
The challenge of interventions of proven effectiveness in randomised trials not translating into clinical practice is at the crux of implementation science. Asthma supported self-management, which incorporates an asthma action plan and regular annual review by a healthcare professional , is a case in point. Supported self-management has been shown to be cost-effective, reduce hospitalisations, emergency department attendances, and unscheduled healthcare; improve markers of asthma control and patient quality of life in numerous trials and systematic reviews [2,3,4]. Consequently, for the past three decades, both national and international guidelines have recommended such care for individuals with asthma [5, 6] yet implementation remains poor. International surveys typically report only between one third and one half of people with asthma own an action plan and less than 40% receive the three key aspects of basic asthma care when defined as including an annual review, owning an action plan, and having an inhaler check [7,8,9,10,11]. Moreover, routine primary care data from our developmental work revealed that only 6% had a coded record of being given an action plan . Tackling barriers to implementation of asthma supported self-management is therefore a priority within asthma care . Further, given asthma is a common, non-communicable illness affecting approximately 262 million people internationally  and causing 455,000 deaths annually  (many of which could be avoided if symptoms were controlled with proper management) [13, 16, 17], the problem is a challenge for healthcare worldwide.
Meta-reviews exploring implementation of supported self-management in chronic illness have previously indicated that whilst patient education, professional education, and organisation strategies are all essential for successful implementation of supported self-management, rarely are they integrated and evaluated together [18, 19]. A multifaceted and multidisciplinary approach within asthma which provides resources for patients, educates, and motivates healthcare professionals, and does so within the context of an organisation which actively endorses supported self-management, has therefore been called for . As such, a whole systems approach is needed and is currently at the heart of asthma health service recommendations within the UK .
A challenge when conducting such work however becomes how to incorporate and integrate sound theoretical knowledge at multiple levels, with the individual, team, and organisational implementation strategies being informed by often complementary but potentially different theories. Birken et al.  suggest that use of multiple theories can help researchers address multiple study purposes, but also caution that in some cases multiple frameworks may add unnecessary complexity and redundancy. A key consideration when selecting implementation theories is whether they also work in harmony with the original intervention theory to produce a cohesive whole. A potential benefit of theory integration may be enabling design of process evaluations to fully explore the mechanisms by which both the implementation and intervention are posited to work, and thus contribute to progress in the field. This responds to calls for the need to use empirical data from process evaluations to refine implementation theory .
The aim of this paper is to show how we developed an integrated programme theory, and how this informed both the implementation strategy and the implications for the process evaluation of a large, UK wide Hybrid type II cluster randomised trial IMP2ART (IMPlementing IMProved Asthma self-management as RouTine) . Here we describe the methods and results of our theoretical integration, how this informed the evolving implementation strategy, and the final strategy following a feasibility pre-pilot trial of the strategy. We do not aim to report results of the main trial which tests the impact of a whole systems implementation strategy that embeds supported asthma self-management in primary care, compared with usual care on: unscheduled care (clinical outcome) and ownership of an action plan (implementation outcome).
Similarly, findings from a process evaluation which will explore how supported self-management was implemented (or not) to aid interpretation, inform scaling up and sustainability will be published separately.
This article aims to generate learning around the implementation of supported self-management in primary care more generally, as this is a critical element in the management of most chronic illnesses.
Design of the implementation strategy was informed by MRC guidance  and the person-based approach to intervention development  and is outlined in Fig. 1. Importantly, each step was used iteratively to inform the next step with repeated cycling between steps where needed.
The study was supported by grants from the National Institute of Health and Care Research (NIHR) in the UK, one understanding the context and challenges of implementing asthma self-management (NIHR RP-DG-1213–10,008) and one for development and evaluation of the strategy (NIHR RP-PG-1016–20008). The Asthma UK Centre for Applied Research supported some additional theoretical work (AC-2012–01).
Building a team
At the outset of the programme of work, a stakeholder map was created of individuals involved in asthma self-management in primary care, and representatives from each of these disciplines were invited to form the initial study team. At key points (i.e. when initial theory and guiding principles were identified), the map was reviewed, and further members were invited to join the team as needed. An implementation strategy development working group was set up to ensure multidisciplinary input into IMP2ART. In addition, working groups with expertise around theory and process evaluation (led by LS and JS), a patient and public involvement group (led by TJ and NM) and a professional advisory group (led by SH) were set up.
The function of the team was to bring tacit knowledge of the issues that may need to be addressed and serve as a starting point for directions of travel, some of this occurring at the stage of funding applications and developed iteratively as the development progressed.
Outline implementation approach and theory
Review of evidence
In line with the whole systems approach, implementation components were planned to target patients, healthcare professionals and organisational structures. Preliminary work searched for literature reviews in these defined areas to ensure research efficiency and build upon the existing evidence base . A taxonomy of important components of support for asthma self-management derived from the PRISMS study  and considered in the asthma context  was available; however, a gap in the content and delivery of healthcare professional education was identified. A systematic review of professional education interventions in asthma or other long-term conditions  was therefore conducted in accordance with Cochrane methodology. This scoped the availability of education packages and coded interventions using the Theoretical Domains Framework , to understand whether certain theoretical constructs were important to include.
Literature suggested audit and feedback led to a “potentially important” improvement in practice , and our initial qualitative work suggested a pivotal role for templates in determining the content of asthma reviews . We undertook a systematic review to inform the optimal design for a template to promote patient-centred care  and scoped the context related to supported self-management in national and international guidelines .
Use of theory
In addition to building on previous evidence, the MRC complex intervention framework  and related guidance on intervention development  strongly recommend underpinning intervention development with theory. However, the use and application of theory has become increasingly complex with Nilsen  and Kislov et al.  both reporting theory descriptors at multiple levels. At the outset, we conceived there would need to be theory informing the content of strategies for patients, healthcare professionals (individuals and teams) and the organisation, as well as an overarching implementation theory. We expected that patient and healthcare professional strategies would be influenced by the COM-B model  which specifies that Behaviour at both individual and group levels is influenced by Capability (physical, e.g. dexterity and psychological, e.g. memory), Opportunity (physical, e.g. resources and social, e.g. whether important others support the behaviour) and Motivation (both automatic, e.g. habits and reflective, e.g. beliefs). This model is recommended for interventions targeted at behaviour change in national guidance . From our initial exploratory work in primary care practices , we also anticipated that organisational strategies would be informed by routinisation theory , whereby a behaviour is repeated frequently in the same context until it becomes a routine (or habit), requiring less cognitive power. We envisaged that by understanding where there are weaknesses in either a patients’ or healthcare professionals’ capability, opportunity or motivation to self-manage or support self-management, we would be able to target this with a specific intervention, e.g. education, provision of resources, or motivational discussion. By working with teams over a year to provide behaviours supporting self-management, e.g. discussing asthma action plans at every asthma consultation, this would then become routine practice.
In order to check that these were the most appropriate theories to integrate into an overarching programme theory, and to ensure that evolving implementation strategies were fully theoretically informed, three team members with extensive theoretical expertise in behaviour change, implementation science and organisational change (LS, JS and KM) undertook a mapping exercise (see supplementary file 1). Theories were reviewed and both theories and strategies were mapped on to each other.
The mapping was subsequently presented to the process and intervention development teams with feedback integrated into the developing programme theory. In addition, an implementation logic model was developed in collaboration with the team.
Develop guiding principles
To elicit understanding of what patients and healthcare professionals saw as their most important needs for supporting self-management, and the key principles of the implementation strategy, qualitative work had been conducted with both professional and patient groups. For the professional group, 23 general practitioners, seven nurses and three administrative staff, across 14 different primary care settings, agreed to participate in either a single focus group or interview. The topic guide explored views on existing routines for supported self-management, barriers to its provision and possible solutions. Thematic analysis was conducted on anonymised transcripts. Full methods have been described previously .
For the patient interviews, 49 participants (including 45 patient and four parent/carers) from ten general practices participated and expressed views on understanding and conduct of self-management, how behaviours had developed, barriers to self-management and ways to overcome this. Analysis used an interpretative phenomenological approach and was conducted with consultation of a multidisciplinary steering group. This has been described in full .
Key findings from both sets of qualitative work were presented to the intervention development team who then reached consensus on the guiding principles.
Develop detailed implementation design
Having completed the above steps preliminary patient, professional and organisational components were identified that were in line with the evidence, theory and guiding principles. For each component, a range of prototypes was developed bearing in mind the theoretical underpinnings and other relevant considerations. For example, the educational modules were informed by andragogy (adult learning) and e-learning methodologies (see  for further details).
Prototypes were reviewed by the implementation strategy development group as well as the patient advisory and professional advisory group with iterative feedback and re-design (see supplementary file 2 for greater detail on strategy).
A real-world pre-pilot was conducted to evaluate how the implementation strategies ‘hung’ together as a whole. Four general practices were identified and provided with the prototype implementation strategy.
Debriefing was used to gain initial reflections from the facilitator on acceptability. Interviews were conducted for individuals completing education modules and reviewing other resources.
Finalising the implementation strategy and programme theory
Following the pre-pilot, a workshop (August, 2019) was held with the implementation strategy development group to consider any changes that needed to be made. Potential changes were presented to the team and the MoSCow approach  was used to agree whether changes were needed.
In March 2020, just prior to commencement of the planned internal pilot (April 2020), the global COVID-19 pandemic hit. This required the majority of non-COVID research to pause and created a rapidly changing climate for future implementation of healthcare. It quickly became apparent that healthcare provision would make increasing use of technological and remote approaches [41, 42]. The IMP2ART project therefore used the enforced pause in recruitment as an opportunity to review the implementation strategy, for the changing healthcare context. All strategies that had been agreed were reviewed for potential optimisation for a future where remote and digital delivery of healthcare is more prevalent. Where optimisation was possible, steps were reinitiated and the whole implementation strategy was updated (supplementary file 2 indicates changes made to the implementation strategy as well as full detail in the trial protocol ). One final opportunity to review the implementation strategy was the internal pilot although this was designed primarily to test trial processes.
The final programme theory was outlined and presented to the working group. This was used as an important element for further designing the process evaluation.
Building a team
From the outset, a multidisciplinary team of collaborators including patient colleagues, primary care clinicians and academics, implementation researchers, educationalists (Education for Health), health psychologists, trial methodologists, health economists, and a ‘not-for-profit, social enterprise’ (Optimum Patient Care) was formed. Early work further highlighted the importance of organisational change and facilitators as enablers of change and hence additional team members representing these areas were included (VM). In addition to individual team members, the project was embedded within the Asthma UK Centre for Applied Research, (https://www.ed.ac.uk/usher/aukcar) an initiative bringing together expertise from across the UK designed to increase collaboration and optimise delivery and impact of asthma research.
Outline implementation approach and theory
Aligned with the Quality and Outcome annual targets , it was deemed that the implementation strategy should include 12 months of active facilitation followed by a 12-month phase for embedding and adapting to fully incorporate audit and feedback, templates, healthcare professional education and patient resources to individual practices.
Review of evidence
The literature review of professional education interventions concluded that inclusion of strategies such as endorsement by local opinion leaders, making education inter-professional and having clear reference to guideline recommendations would be useful. Theoretical domains shown to be potentially useful to address included ‘social influences, e.g. social support’; ‘environmental context and resources’ e.g. provision of an action plan’; ‘behavioural regulation’, e.g. self-monitoring of peak flow; ‘beliefs about consequences’, e.g. that adherence to medication will improve asthma control; and ‘social/professional role and identity’ such that several members of the team see they have a role in self-management not simply the ‘asthma nurse’ .
The systematic review of templates in long-term conditions  concluded that templates have both advantages and disadvantages. Whilst they can be a helpful prompt in consultations and guide priorities, ensuring templates facilitate patient-centred care, for example by explicitly asking about the patient’s agenda, is important.
The review of audit and feedback suggested that optimal feedback would be received regularly (monthly), brief, use other general practices as comparators and include different modes of data presentation.
As the preliminary work had already made use of approaches from the Behaviour change wheel (i.e. the Theoretical Domains Framework), LS and KM recommended that the Capability, Opportunity, Motivation Framework  would be a useful model from behaviour change science to guide further development of the implementation strategy. It has the advantage that it was designed to be applied for interventions at multiple levels of the healthcare system from policy change to individual-level behaviour change and therefore resonated well with the objective of IMP2ART to facilitate change at individual, team and organisational levels.
In reviewing the organisational change literature (e.g. [37, 44]), the team felt it would be important to tailor implementation strategies to fit in with the routines of an individual practice. However, it became apparent that routinisation theory may be too narrow and that other related organisational constructs such as culture (for example how hierarchical a practice is, or open to new initiatives) and resources should also be considered in IMP2ART. It was agreed that whilst it may not be feasible for IMP2ART to substantially alter culture or resources , understanding how such constructs could impact on implementation success would be important.
As discussions around the implementation strategy evolved, it became apparent that the role of a facilitator (i.e. an individual linked to a practice to support and tailor IMP2ART resources) to support enactment of change was pivotal. This led one of the theory stakeholders (JS) to present the team with another implementation theory—the integrated Promoting Action on Research Implementation in Health Services (iPARIHS) framework . iPARIHS holds that for successful implementation there are four key constructs (i) Innovation—which revolves around the evidence and knowledge sources to be applied, but with adaptation where appropriate dependent on the local setting, i.e. supported self-management with use of IMP2ART resources, (ii) Recipients—which speaks to the stakeholders (both individuals and teams, e.g. the patient or healthcare professional and the primary care team) involved in the implementation and their attitudes, beliefs and behaviours that impact the implementation, (iii) Context—which reflects the micro, meso and macro levels by which context influences change. It is defined in iPARIHS in terms of resources, culture, leadership and orientation to evaluation and learning. The final and key construct is ‘facilitation’ which is seen as the active ingredient that works with the recipients within their context to implement the innovation. The role of the facilitator is to understand the interacting factors and tailor input accordingly. Given the importance of tailoring implementation strategies according to the complexity that is primary care practice, this resonated strongly with the study aims. In addition, the broader understanding of context within iPARIHS was felt to be helpful and this reinforced the decision to underpin implementation with iPARIHS.
Having identified the primary theories to guide the implementation process, a key aim was to advance the field of implementation science by proposing an integrated model representing the coming together of behaviour change, implementation and organisational constructs and theory, which we could allow them to be interrogated, revised and developed in the light of our empirical process evaluation findings as recommended . Figure 2 is our proposed integrated model.
In this model, behaviour (i.e. implementation of supported self-management) is enacted by recipients (individual or team, healthcare professional or patient), with the support of the tailored implementation strategy (the innovation) that maximises both individuals and team motivation (willingness to perform a behaviour), capability (whether someone has the physical, e.g. dexterity to use an inhaler or psychological ability, e.g. recall) and opportunity (either social such as feeling their healthcare professional endorses the behaviour or practical such as having enough appointments to see patients) through practice-specific assessment and support from the facilitator who accounts for and overcomes challenges for individual practices within their given context.
Table 1 shows the key findings from each of the preliminary studies to understand the needs of key stakeholders and the current evidence base. From these, and in conjunction with the outlined theory, three main guiding principles were articulated and thus were used as core components of the implementation strategy. A fourth was added later due to COVID-19.
Emphasising a team approach
Incorporating strategies within individual practice routines, encouraging adaption to promote a tailored approach
Ensuring a patient-centred approach to care throughout
Supporting practices in adapting their care to either partial or entire remote delivery
Develop detailed intervention design
A comprehensive implementation strategy was then defined. A full description of the prototype strategy including mapping to both COM-B and iPARIHS constructs is available in supplementary file 2 and a summary description is provided in Table 2.
The aim was for each practice randomised to the implementation group to be allocated a facilitator who would work with the practice over a period of 12 months to embed and tailor supported self-management using those implementation strategies most suitable for the practice. The lead facilitator and three facilitator colleagues were all experienced nurses with respiratory training and prior experience of facilitation. IMP2ART-specific training was provided for facilitators to enhance facilitation skills relevant to the context and included modelling by the lead facilitator, and joint supervision and peer support where facilitators could share and learn from experiences throughout the delivery period.
All practices had a 1-h facilitated face-to-face workshop to which all practice team members were invited. This workshop served to introduce IMP2ART, its objectives and the IMP2ART resources. All practices were introduced to a range of patient materials including accessible action plans, a website with patient (and healthcare professional resources) with signposting to established sites such as Asthma UK, patient invitation letters to reviews and posters for use in the practice. A patient-centred template to structure asthma reviews, specifically designed to address the patient agenda as well as that of the healthcare professional  was uploaded to all practice systems prior to the workshop. All practices also received an audit and feedback report of their previous year’s asthma management including the number of action plans provided, reviews conducted and at risk individuals . Within the workshop, a whole team approach was endorsed and a team education module (team awareness module: module 1) introduced to reinforce this. Healthcare professionals in the practice who delivered care to people with asthma were encouraged to undertake an on-line 1-h individual supporting self-management education module (individual study module: module 2) . The workshop was then completed with the practice team jointly setting key tailored goals for implementing the IMP2ART strategy in the coming months. Each practice then received regular facilitator contacts and support over the next year and monthly and annual audit and feedback reports for 2 years. At the end of 1 year, a closing workshop with the facilitator was conducted that reflected on progress, including review of an annual audit report and made plans for sustainability going forward. Sustainability was addressed using a problem-solving approach, considering individual practice barriers and facilitators with the implementation of supported self-management, as well as setting a final practice team plan of activities to take forward to support ongoing use of supported self-management.
The pre-pilot was conducted in four practices over a period of 3 months. Two facilitators delivered all workshops face-to-face (spring/summer 2019) which were attended in total by 26 general practice staff including GPs, nurses, administrators, practice managers, healthcare assistants. A member of the IMP2ART team (KM) also attended two of the workshops as an observer and made field notes. There was considerable variability in attendance, the amount of time available for workshops (10–60 min) as well as technical challenges. It was clear that it was not possible to run the team education module in full and set a team action plan as envisaged, within the time available. Facilitators (in agreement with the observing team members) proposed that the workshop be used as a free-flowing session, picking up points from the team education module but focusing more on development of the team plan. This was rated a ‘must have’ according to MoSCoW criteria  and was therefore a critical change. A sequence of emails to highlight importance of whole team attendance at the workshop were also developed and considered a ‘should have’.
The pre-pilot also tested upload of the template which was well received with only minor changes. Audit and feedback were also reported as clear and easy to use.
Finalising the implementation strategy and programme theory
Review of the implementation components at the onset of the COVID-19 pandemic suggested that no changes needed to be made to the practice templates. The annual audit and feedback reports had a section added which covered COVID-19 (e.g. vaccination status, risk) and patient letters and invitations referred to remote appointments. Changes were however felt relevant for both the patient and healthcare professional website, the individual education module and the facilitation approach. These were primarily addition of new materials and are shown in supplementary file 2 in italics to reflect ‘COVID-19’ modifications. The most significant change consequent to the changing context was moving from in-person facilitation to a remote facilitation, with the workshop delivered by Microsoft Teams. Subsequent planned contacts between facilitators and practices were almost wholly remote.
In addition, a range of resources to support healthcare professionals delivering remote reviews was provided and drew on a realist review that was completed by the team which found that remote reviews for asthma self-management were safe, acceptable and clinically effective . There were no significant changes made to the implementation strategy following the internal pilot.
Implementation of interventions in primary care provides a particular challenge given the multiple systems with and within which they work . However, given their accessibility and that they are often the first point of contact with the health service for patients, ensuring implementation of evidence-based practice in this context is a priority for healthcare systems worldwide . The implementation programme presented here (IMP2ART) describes a model for increasing supported self-management in asthma. Given the central role of supported self-management to many chronic conditions, there is considerable potential for generalisability from the learning in this project.
As described in this paper, the IMP2ART model is based on extensive use of theory (including from multiple disciplines), the evidence base and lived experience. We have followed guidance for development of interventions and described this in line with recommendations for both intervention development  and implementation research . Considerable work was conducted to identify key guiding principles, appropriate theory, and feasibility work in the format of a pre-pilot where aspects of the strategy were integrated and tested together. The latter has been recommended previously as key to understanding not only the independent delivery of specific components but also the interaction of elements and whether there is conflict or synergy between elements of the overall strategy . An example of the benefits of this approach was identification of a tension between available resources (e.g. time, technological access) and amount of content to be covered in the facilitator workshop. Having identified this tension, changes were made to the implementation strategy. Omitting the pre-pilot phase would have meant changes would have had to be made after the internal pilot phase of the trial, and the 12 pilot practices could not have been included in the main trial, with implications for trial recruitment and power.
In developing the programme of work, we have described how different theories were integrated to form a platform from which analysis and greater depth of understanding can occur. The use of theory has been described by many as a critical element in implementation science and its specification will enable us to consider multiple levels of change that are likely to be needed for successful implementation [22, 34]. By incorporating both the COM-B and iPARIHS frameworks, we bring together the disciplines of health psychology and implementation science and work towards recommendations  to recognise the synergy of these disciplines. Also, by using this integrated model as a basis for evaluation with iterative feedback, we are participating in the act of not only describing, but theorising, as recommended by Kislov et al. . Further, we respond to the call for further conceptualisation of the recipient domain in iPARIHS  and will use our process evaluation to empirically test our conceptualisation.
Recommendations for evaluation
An important objective in our comprehensive design and description of the implementation strategy is that not only should it increase likelihood of effectiveness, but it should enable evaluative efforts to understand the mechanisms of action. The hypothesis around the central role of facilitation as the active ingredient of implementation, with recipients actioning change when they have developed sufficient capability, opportunity and motivation, and context playing a significant moderating factor across all elements will be examined in the process evaluation. The process evaluation is carefully mapped to the underpinning theory and will ask questions such as ‘Do those practices that engage with facilitation differently demonstrate greater change? Does variation in capability, opportunity and motivation at the individual and team level act as a barrier (or facilitator) to change, and are changes in leadership or culture significant in that change? Informed by such data, a revised programme theory with recommendations for sustainable implementation in primary care practice will be made.
An additional critical element to understanding the utility of the implementation strategy is assessment of the fidelity with which the strategy is delivered. Fidelity relates to the extent an intervention is delivered as intended; and can be described in terms of five domains (i) study design, (ii) provider delivery, (iii) treatment delivery, (iv) treatment receipt and (v) treatment enactment [58, 59]. Implementation interventions need to balance the need for fidelity with that for adaptation and it has been proposed that these concepts are intrinsically linked . StaRI further specifies that reporting of implementation studies should include fidelity to implementation strategy as planned, and adaptation to suit context and preference  and there have been recent frameworks published for the reporting of this [61, 62]. It is a prerequisite therefore that there is a clear description of the implementation strategy, core elements and conceptualisation of how adaptation is envisaged. The detailed description of IMP2ART provided here allows for this level of analysis to take place.
The occurrence of the COVID-19 pandemic during the development phase of our implementation strategy acted as an ‘in vivo’ test for how our strategy could be influenced by external context and adapted appropriately. The strategy was able to be adapted without compromising the core components and it is a strength that IMP2ART is now compatible with multiple modes of consultation given the post-COVID norm of offering remote healthcare. The extent that remote delivery, particularly of facilitation, is successful is however yet to be ascertained but will be explored as part of the process evaluation.
Strengths and limitations
It is a strength of our implementation strategy that its development has followed best practice guidance and each step has been explicitly described and made publicly available [39, 49, 50]. By pre-piloting the strategy, we got a strong sense of how the components worked together and we were able to make refinements before entering the internal pilot phase of the study.
One limitation of our approach was that we did not choose a theory based on a tool such as the implementation Theory and Selection Tool (T-CAST)  or strictly in accordance with guides such as Lynch et al. . Using such tools or guidance may have led to selection of a different theory and/or a more systematic approach to theory selection. Although not following a documented approach, we did take a systematic and informed approach where decisions were made within a multidisciplinary team with considerable expertise in a range of areas including theory, practice and methodology. Decisions on theory were taken as a team using a consensus approach and there with an openness to change if this was deemed appropriate.
The IMP2ART study is a large UK cluster randomised implementation trial aiming to embed supported asthma self-management in primary care practice. We have described a robust process for design of the implementation strategy including development of a programme theory. We propose an advancement in the field by way of integration of implementation science theory (iPARIHS) and behaviour change theory (COM-B) which will be evaluated in a comprehensive process evaluation.
Capability Opportunity Motivation Behaviour
Health Care Professional
IMPlementing IMProved Asthma self-management as RouTine
Integrated Promoting Action Research in Healthcare Services
Medical Research Council
National Institute of Health and care Research
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The authors acknowledge all members of the IMP2ART programme group for their contributions including: Brian McKinstry, Aziz Sheikh (University of Edinburgh); Sandra Eldridge, Chris Griffiths (Queen Mary University of London); Steven Julious (University of Sheffield); Ann-Louise Caress (University of Huddersfield). Dr Susan Morrow was Programme Manager during early stages of this work. Emily Healy provided invaluable administrative support. We are grateful to the Primary Care Respiratory Society for recruiting members for the IMP2ART Professional Advisory Group: Dr Noel Baxter, Dr Stephen Gaduzo, Val Gerrard, Dr Katherine Hickman, Dr Stephen Gaduzo, Dr Binita Kane, Dr Duncan Keeley, Vikki Knowles, Ren Lawlor, Ruth McArthur, Debbie Roots, Anne Rodman, Laura Rush, Dr Mukesh Singh, Iain Small, Carol Stonham, Dr Andrew Whittamore. We thank the IMP2ART Patient and Public Involvement Group for their advice: Anthony McGuiness, Bill Day, David Weatherill, Daniel Russell, Eve Smyth, Irena Paterson, Kieron Blake. We acknowledge the helpful advice of the Independent Programme Steering Committee: Professor Robbie Foy (chair), Professor Kate Jolly, Professor Obi Ukoumunne, and David Supple.
The National Institute for Health and Care Research (NIHR) Programme Grants for Applied Research (Reference Number RP-PG-1016–20008). The views expressed are those of the authors and not necessarily those of the NIHR or the Department of Health and Social Care. The funder had no role in the design of this study and will not have any role during its execution, analyses, interpretation of the data or decision to publish. The Asthma UK Centre for Applied Research (reference Asthma UK: AC-2012–01) funded some pre-grant work on the theoretical development of the implementation strategy. Education for Health developed the education modules  and Optimum Patient Care developed the templates and audit and feedback components of the implementation strategy .
Ethics approval and consent to participate
Ethics approval for the development phase of IMP2ART was from the NHS Health Research Authority (ref: IRAS 249302) and is sponsored by the Academic and Clinical Central Office for Research and Development (ACCORD), The University of Edinburgh and NHS Lothian Health Board.
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Not applicable for this section.
The authors declare that they have no competing interests.
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Supplementary File 1. Preliminary theoretical Mapping of the iPARIHS constructs and the Theoretical Domains Framework (TDF) and Capability Opportunity Motivation-Behaviour (COM-B) framework.
Supplementary File 2. Full description of the IMP2ART Implementation Strategy with mapping to IPARIHS and COM-B
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Steed, L., Sheringham, J., McClatchey, K. et al. IMP2ART: development of a multi-level programme theory integrating the COM-B model and the iPARIHS framework, to enhance implementation of supported self-management of asthma in primary care. Implement Sci Commun 4, 136 (2023). https://doi.org/10.1186/s43058-023-00515-2