Evaluating the implementation of a national clinical programme for diabetes to standardise and improve services: a realist evaluation protocol

IMplementation of the Preterm Birth Surveillance PAthway: a RealisT evaluation (The IMPART Study)

BACKGROUND

In the UK, 7.6% of babies are born preterm, which the Department of Health aims to decrease to 6% by 2025. To advance this, NHS England released Saving Babies Lives Care Bundle Version 2 Element 5, recommending the Preterm Birth Pathway for women at risk of preterm birth. The success of this new pathway depends on its implementation. The IMPART (IMplementation of the Preterm Birth Surveillance PAthway: a RealisT evaluation) study aimed to research how, why, for whom, to what extent and in what contexts the prediction and prevention aspects of Preterm Birth Surveillance Pathway is implemented through a realist evaluation. Realist implementation studies are growing in popularity.

METHODS

Initial programme theories were developed through a realist informed literature scope, interviews with developers of the NHS England guidance, and a national questionnaire of current practice. Implementation theory was utilised in developing the programme theories. Data (interviews and observations with staff and women) were undertaken in 3 case sites in England to 'test' the programme theories. Substantive theory was utilised during data analysis to interpret and refine the theories on how implementation could be improved.

RESULTS

Three explanatory areas were developed: risk assessing and referral; the preterm birth surveillance clinic; and women centred care. Explanatory area 1 dealt with the problems in correct risk assessment and referral to a preterm clinic. Explanatory area 2 focused on how once a correct referral has been made to a preterm clinic, knowledgeable and supported clinicians can deliver a well-functioning clinic. Explanatory area 3 concentrated on how the pathway delivers appropriate care to women.

CONCLUSIONS

The IMPART study provides several areas where implementation could be improved. These include educating clinicians on knowledge of risk factors and the purpose of the preterm clinic, having a multidisciplinary preterm team (including a preterm midwife) with specialist preterm knowledge and skills (including transvaginal cervical scanning skills), and sites actively working with their local network. This multidisciplinary preterm team are placed to deliver continuity of care for women at high-risk of preterm birth, being attentive to their history but also ensuring they are not defined by their risk status.

TRIAL REGISTRATION

ISRCTN57127874.

Understanding Whether and How a Digital Health Intervention Improves Transition Care for Emerging Adults Living With Type 1 Diabetes: Protocol for a Mixed Methods Realist Evaluation

BACKGROUND

Emerging adults living with type 1 diabetes (T1D) face a series of challenges with self-management and decreased health system engagement, leading to an increased risk of acute complications and hospital admissions. Effective and scalable strategies are needed to support this population to transfer seamlessly from pediatric to adult care with sufficient self-management capability. While digital health interventions for T1D self-management are a promising strategy, it remains unclear which elements work, how, and for which groups of individuals.

OBJECTIVE

This study aims to evaluate the design and implementation of a multicomponent SMS text message-based digital health intervention to support emerging adults living with T1D in real-world settings. The objectives are to identify the intervention components and associated mechanisms that support user engagement and T1D health care transition experiences and determine the individual characteristics that influence the implementation process.

METHODS

We used a realist evaluation embedded alongside a randomized controlled trial, which uses a sequential mixed methods design to analyze data from multiple sources, including intervention usage data, patient-reported outcomes, and realist interviews. In step 1, we conducted a document analysis to develop a program theory that outlines the hypothesized relationships among "individual-level contextual factors, intervention components and features, mechanisms, and outcomes," with special attention paid to user engagement. Among them, intervention components and features depict 10 core characteristics such as transition support information, problem-solving information, and real-time interactivity. The proximal outcomes of interest include user engagement, self-efficacy, and negative emotions, whereas the distal outcomes of interest include transition readiness, self-blood glucose monitoring behaviors, and blood glucose. In step 2, we plan to conduct semistructured realist interviews with the randomized controlled trial's intervention-arm participants to test the hypothesized "context-intervention-mechanism-outcome" configurations. In step 3, we plan to triangulate all sources of data using a coincidence analysis to identify the necessary combinations of factors that determine whether and how the desired outcomes are achieved and use these insights to consolidate the program theory.

RESULTS

For step 1 analysis, we have developed the initial program theory and the corresponding data collection plan. For step 2 analysis, participant enrollment for the randomized controlled trial started in January 2023. Participant enrollment for this realist evaluation was anticipated to start in July 2023 and continue until we reached thematic saturation or achieved informational power.

CONCLUSIONS

Beyond contributing to knowledge on the multiple pathways that lead to successful engagement with a digital health intervention as well as target outcomes in T1D care transitions, embedding the realist evaluation alongside the trial may inform real-time intervention refinement to improve user engagement and transition experiences. The knowledge gained from this study may inform the design, implementation, and evaluation of future digital health interventions that aim to improve transition experiences.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

PRR1-10.2196/46115.

Protocol for the IMPART study: IMplementation of the preterm birth surveillance PAthway - a RealisT evaluation

INTRODUCTION

New guidance, from NHS England (Saving Babies Lives Care Bundle Version 2 Element 5 (SBLCBv2)) has recommended a best practice pathway for women at risk of preterm birth (the Preterm Birth Pathway). This is to help meet the Department of Health's aim to reduce preterm birth from 8% to 6% by 2025. Considering most hospitals do not currently have a preterm prevention clinic, implementing this pathway will require significant coordination.

METHODS AND ANALYSIS

The study will aim to investigate key features of contexts, mechanisms and outcomes, and their interactions in the implementation of the asymptomatic prediction and prevention components of the SBLCBv2 Preterm Birth Surveillance Pathway. This will be through a theory driven realist evaluation, utilising mixed methods (interviews with staff and women, observational analysis and analysing routinely collected hospital and admin data) in three case sites in England. The study has a Project Advisory Group composed of five women who have recently given birth.

ETHICS AND DISSEMINATION

The study has ethical approval (King's College London REC approval number: MRSP-20/21-20955, and, IRAS:289144). A dissemination plan will be fully created with the Project Advisory Group, and we anticipate this will include presenting at conferences, publications, webinars, alongside dissemination to the wider population through parent and baby groups, the media and charities.

TRIAL REGISTRATION NUMBER

ISRCTN57127874.

Health professionals’ views of the first national GP payment scheme for structured type 2 diabetes care in Ireland: a qualitative study

Background: Payment schemes are widely used to improve chronic disease management in general practice. Although stakeholder views of such schemes could provide valuable learning regarding aspects that work and those which are more difficult to implement, there is a paucity of such data. We explored health professionals’ views of the implementation of the first national general practice payment scheme for type 2 diabetes (T2DM) care in Ireland, the ‘cycle of care’. Methods: Qualitative data were drawn from a multiple case study evaluating the implementation of a National Clinical Programme for Diabetes, collected from April 2016 to June 2017. Interview and focus group transcripts from participants involved in providing diabetes management in general practice and who referenced the cycle of care were eligible for inclusion in the current analysis. Data were analysed using reflective thematic analysis. Results: We analysed data from 28 participants comprising general practitioners (GPs) (n=8), practice nurses (n=9) and diabetes nurse specialists (DNS) (n=11). Participants perceived the cycle of care as “not adequate, but…a good start” to improve T2DM care in general practice in Ireland. Perceived benefits were greater financial viability for T2DM management in general practice, fostering a more proactive approach to T2DM care, delivery of T2DM care closer to patients’ homes, and increased use of other community diabetes services e.g., DNS and podiatry. Participants identified the limited resource for practice nurse time, inflexibility to provide care based on patient need and issues with data submission as drawbacks of the cycle of care. Conclusions: The cycle of care was viewed as a positive first step to increase and improve T2DM care delivered in general practice in Ireland. The implementation issues identified in this study should be considered in the design of future payment schemes targeting chronic disease management in general practice.

Using Electronic Health Record-Based Clinical Decision Support to Provide Social Risk-Informed Care in Community Health Centers: Protocol for the Design and Assessment of a Clinical Decision Support Tool

Background

Consistent and compelling evidence demonstrates that social and economic adversity has an impact on health outcomes. In response, many health care professional organizations recommend screening patients for experiences of social and economic adversity or social risks—for example, food, housing, and transportation insecurity—in the context of care. Guidance on how health care providers can act on documented social risk data to improve health outcomes is nascent. A strategy recommended by the National Academy of Medicine involves using social risk data to adapt care plans in ways that accommodate patients’ social risks.

Objective

This study’s aims are to develop electronic health record (EHR)–based clinical decision support (CDS) tools that suggest social risk–informed care plan adaptations for patients with diabetes or hypertension, assess tool adoption and its impact on selected clinical quality measures in community health centers, and examine perceptions of tool usability and impact on care quality.

Methods

A systematic scoping review and several stakeholder activities will be conducted to inform development of the CDS tools. The tools will be pilot-tested to obtain user input, and their content and form will be revised based on this input. A randomized quasi-experimental design will then be used to assess the impact of the revised tools. Eligible clinics will be randomized to a control group or potential intervention group; clinics will be recruited from the potential intervention group in random order until 6 are enrolled in the study. Intervention clinics will have access to the CDS tools in their EHR, will receive minimal implementation support, and will be followed for 18 months to evaluate tool adoption and the impact of tool use on patient blood pressure and glucose control.

Results

This study was funded in January 2020 by the National Institute on Minority Health and Health Disparities of the National Institutes of Health. Formative activities will take place from April 2020 to July 2021, the CDS tools will be developed between May 2021 and November 2022, the pilot study will be conducted from August 2021 to July 2022, and the main trial will occur from December 2022 to May 2024. Study data will be analyzed, and the results will be disseminated in 2024.

Conclusions

Patients’ social risk information must be presented to care teams in a way that facilitates social risk–informed care. To our knowledge, this study is the first to develop and test EHR-embedded CDS tools designed to support the provision of social risk–informed care. The study results will add a needed understanding of how to use social risk data to improve health outcomes and reduce disparities.

International Registered Report Identifier (IRRID)

PRR1-10.2196/31733

A micro costing analysis of the development of a primary care intervention to improve the uptake of diabetic retinopathy screening

Background

The application of economic analysis within implementation science is still developing and the cost of intervention development, which differs markedly from the costs of initial implementation and maintenance, is often overlooked. Our aim was to retrospectively cost the development of a multifaceted intervention in primary care to improve attendance at diabetic retinopathy screening.

Methods

A retrospective micro costing of developing the intervention from the research funder perspective was conducted. It was based on a systematic intervention development process involving analysis of existing audit data and interviews with patients and healthcare professionals (HCPs), conducting consensus meetings with patients and HCPs, and using these data together with a rapid review of the effectiveness of interventions, to inform the final intervention. Both direct (non-personnel, e.g. travel, stationary, room hire) and indirect (personnel) costs were included. Data sources included researcher time logs, payroll data, salary scales, an online financial management system, invoices and purchase orders. Personnel involved in the intervention development were consulted to determine the activities they conducted and the duration of their involvement. Sensitivity and scenario analyses were conducted to estimate uncertainty around parameters and scope.

Results

The total cost of intervention development (July 2014–January 2019) was €40,485 of which 78% were indirect (personnel) costs (€31,451). In total, personnel contributed 1368 h to intervention development. Highest cost activities were the patient interviews, and consensus process, contributing 23% and 34% of the total cost. Varying estimated time spent on intervention development activities by + 10% increased total intervention development cost by 6% to €42,982.

Conclusions

Our results highlight that intervention development requires a significant amount of human capital input, combining research experience, patient and public experience, and expert knowledge in relevant fields. The time committed to intervention development is critical but has a significant opportunity cost. With limited resources for research on developing and implementing interventions, capturing intervention development costs and incorporating them as part of assessment of cost-effective interventions, could inform research priority and resource allocation decisions.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13012-021-01085-4.

RapidInfo4U ­– an online individualised COVID-19 support intervention for nursing and allied health professionals: study protocol

Background: The COVID-19 outbreak was declared a pandemic by the World Health Organization on March 11th, 2020. An ongoing challenge in healthcare is ensuring that up-to-date and high-quality research evidence is implemented in practice. In the context of a global pandemic it is assumed, given the increased pressures on healthcare professionals that this problem has the potential to be exacerbated. Furthermore, the COVID-19 pandemic resulted in many health professionals being reassigned to areas outside their usual scope, returning to practice following absence or commencing their career as new entrants in the midst of a major crisis. These professionals are likely to require additional support to assist their confidence and competence. Aims: This project has two broad aims: to design and deliver an online educational platform to support nursing and allied health professionals in their clinical practice throughout the pandemic and to evaluate that platform and its implementation. Methods: The research protocol for this study consists of two work streams: the development and delivery of the online platform; and the project evaluation. This research will have a mixed methods approach including website data analytics, quantitative surveys and qualitative data analysis of semi-structured interviews. Conclusion: Through knowledge brokering and adherence to principles of effective technology-enhanced-learning this project will provide an accessible, individualised online educational resource to effectively meet the needs of individual nurses and allied health professionals in this unprecedented time. The evaluation of the platform and its implementation will provide key learning for future initiatives and may act as proof-of-concept for other organisations and countries seeking to support healthcare professionals’ knowledge needs during similar future pandemics.

Using network analysis to explore factors moderating the implementation of a medication review service in community pharmacy

BACKGROUND

Implementation factors are hypothesised to moderate the implementation of innovations. Although individual barriers and facilitators have been identified for the implementation of different evidence-based services in pharmacy, relationships between implementation factors are usually not considered.

OBJECTIVES

To examine how a network of implementation factors and the position of each factor within this network structure influences the implementation of a medication review service in community pharmacy.

METHODS

A mixed methods approach was used. Medication review with follow-up service was the innovation to be implemented over 12 months in community pharmacies. A network analysis to model relationships between implementation factors was undertaken. Two networks were created.

RESULTS

Implementation factors hindering the service implementation with the highest centrality measures were time, motivation, recruitment, individual identification with the organization and personal characteristics of the pharmacists. Three hundred and sixty-nine different interrelationships between implementation factors were identified. Important causal relationships between implementation factors included: workflow-time; characteristics of the pharmacy-time; personal characteristics of the pharmacists-motivation. Implementation factors facilitating the implementation of the service with highest centrality scores were motivation, individual identification with the organization, beliefs, adaptability, recruitment, external support and leadership. Four hundred and fifty-six different interrelationships were identified. The important causal relationships included: motivation-external support; structure-characteristics of the pharmacy; demographics-location of the pharmacy.

CONCLUSION

Network analysis has proven to be a useful technique to explore networks of factors moderating the implementation of a pharmacy service. Relationships were complex with most implementation factors being interrelated. Motivation and individual identification with the organisation seemed critical factors in both hindering and facilitating the service implementation. The results can inform the design of implementation programs and tailored strategies to promote faster implementation of innovations in pharmacy.

Development of an intervention to facilitate implementation and uptake of diabetic retinopathy screening

BACKGROUND

'Implementation interventions' refer to methods used to enhance the adoption and implementation of clinical interventions such as diabetic retinopathy screening (DRS). DRS is effective, yet uptake is often suboptimal. Despite most routine management taking place in primary care and the central role of health care professionals (HCP) in referring to DRS, few interventions have been developed for primary care. We aimed to develop a multifaceted intervention targeting both professionals and patients to improve DRS uptake as an example of a systematic development process combining theory, stakeholder involvement, and evidence.

METHODS

First, we identified target behaviours through an audit in primary care of screening attendance. Second, we interviewed patients (n = 47) and HCP (n = 30), to identify determinants of uptake using the Theoretical Domains Framework, mapping these to behaviour change techniques (BCTs) to develop intervention content. Thirdly, we conducted semi-structured consensus groups with stakeholders, specifically users of the intervention, i.e. patients (n = 15) and HCPs (n = 16), regarding the feasibility, acceptability, and local relevance of selected BCTs and potential delivery modes. We consulted representatives from the national DRS programme to check intervention 'fit' with existing processes. We applied the APEASE criteria (affordability, practicability, effectiveness, acceptability, side effects, and equity) to select the final intervention components, drawing on findings from the previous steps, and a rapid evidence review of operationalised BCT effectiveness.

RESULTS

We identified potentially modifiable target behaviours at the patient (consent, attendance) and professional (registration) level. Patient barriers to consent/attendance included confusion between screening and routine eye checks, and fear of a negative result. Enablers included a recommendation from friends/family or professionals and recognising screening importance. Professional barriers to registration included the time to register patients and a lack of readily available information on uptake in their local area/practice. Most operationalised BCTs were acceptable to patients and HCPs while the response to feasibility varied. After considering APEASE, the core intervention, incorporating a range of BCTs, involved audit/feedback, electronic prompts targeting professionals, HCP-endorsed reminders (face-to-face, by phone and letter), and an information leaflet for patients.

CONCLUSIONS

Using the example of an intervention to improve DRS uptake, this study illustrates an approach to integrate theory with user involvement. This process highlighted tensions between theory-informed and stakeholder suggestions, and the need to apply the Theoretical Domains Framework (TDF)/BCT structure flexibly. The final intervention draws on the trusted professional-patient relationship, leveraging existing services to enhance implementation of the DRS programme. Intervention feasibility in primary care will be evaluated in a randomised cluster pilot trial.

A multistage mixed methods study protocol to evaluate the implementation and impact of a reconfiguration of acute medicine in Ireland's hospitals

BACKGROUND

To address deficits in the delivery of acute services in Ireland, the National Acute Medicine Programme (NAMP) was established in 2010 to optimise the management of acutely ill medical patients in the hospital setting, and to ensure their supported discharge to primary and community-based care. NAMP aims to reduce inappropriate hospital admissions, reduce length of hospital stay and ensure patients receive timely treatment in the most appropriate setting. It does so primarily via the development of Acute Medical Assessment Units (AMAUs) for the rapid assessment and management of medical patients presenting to hospitals, as well as streamlining the care of those admitted for further care. This study will examine the impact of this programme on patient care and identify the factors influencing its implementation and operation.

METHODS

We will use a multistage mixed methods evaluation with an explanatory sequential design. Firstly, we will develop a logic model to describe the programme's outcomes, its components and the mechanisms of change by which it expects to achieve these outcomes. Then we will assess implementation by measuring utilisation of the Units and comparing the organisational functions implemented to that recommended by the NAMP model of care. Using comparative case study research, we will identify the factors which have influenced the programme's implementation and its operation using the Consolidated Framework for Implementation Research to guide data collection and analysis. This will be followed by an estimation of the impact of the programme on reducing overnight emergency admissions for potentially avoidable medical conditions, and reducing length of hospital stay of acute medical patients. Lastly, data from each stage will be integrated to examine how the programme's outcomes can be explained by the level of implementation.

DISCUSSION

This formative evaluation will enable us to examine whether the NAMP is improving patient care and importantly draw conclusions on how it is doing so. It will identify the factors that contribute to how well the programme is being implemented in the real-world. Lessons learnt will be instrumental in sustaining this programme as well as planning, implementing, and assessing other transformative programmes, especially in the acute care setting.

'Sink or Swim': A Qualitative Study to Understand How and Why Nurses Adapt to Support the Implementation of Integrated Diabetes Care

Background

Integrated care, organising care delivery within and between services, is an approach to improve the quality of care. Existing specialist roles have evolved to work across settings and services to integrate care. However, there is limited insight into how these expanded roles are implemented, including how they may be shaped by context. This paper examines how new diabetes nurse specialists working across care boundaries, together with hospital-based diabetes nurse specialists, adapt to support the implementation of integrated care.

Methods

We conducted semi-structured focus groups and interviews with diabetes nurse specialists purposively sampled by work setting and health service region (n = 30). Analysis was data-driven, coding actions or processes to stay closer to the data and using In Vivo codes to preserve meaning.

Findings

Community nurse specialists described facing a choice of "sink or swim" when appointed with limited guidance on their role. To 'swim' and implement their role, required them to use their initiative and adapt to the local context. When first appointed, both community and hospital nurse specialists actively managed misconceptions of their role by other staff. To establish clinics in general practices, community nurse specialists capitalised on professional contacts to access GPs who might utilise their role. They built GP trust by adopting practice norms and responding to individual needs. They adapted to the lack of a multidisciplinary team "safety net" in the community, by "practicing at a higher level", working more autonomously. Developing professional links and pursuing on-going education was a way to create an alternative 'safety net' so as to feel confident in their clinical decision-making when working in the community. Workarounds facilitated information flow (i.e. patient blood results, treatment, and appointments) between settings in the absence of an electronic record shared between general practices and hospital settings.

Conclusions

Flexibility and innovation facilitates a new way of working across boundaries. Successful implementation of nurse specialist-led integrated care requires strategies to address elements in the inner (differences in practice organisation, role acceptance) and outer (information systems) context.

Study protocol: a pragmatic, stepped-wedge trial of tailored support for implementing social determinants of health documentation/action in community health centers, with realist evaluation

BACKGROUND

National leaders recommend documenting social determinants of health and actions taken to address social determinants of health in electronic health records, and a growing body of evidence suggests the health benefits of doing so. However, little evidence exists to guide implementation of social determinants of health documentation/action.

METHODS

This paper describes a 5-year, mixed-methods, stepped-wedge trial with realist evaluation, designed to test the impact of providing 30 community health centers with step-by-step guidance on implementing electronic health record-based social determinants of health documentation. This guidance will entail 6 months of tailored support from an interdisciplinary team, including training and technical assistance. We will report on tailored support provided at each of five implementation steps; impact of tailored implementation support; a method for tracking such tailoring; and context-specific pathways through which these tailored strategies effect change. We will track the competencies and resources needed to support the study clinics' implementation efforts.

DISCUSSION

Results will inform how to tailor implementation strategies to meet local needs in real-world practice settings. Secondary analyses will assess impacts of social determinants of health documentation and referral-making on diabetes outcomes. By learning whether and how scalable, tailored implementation strategies help community health centers adopt social determinants of health documentation and action, this study will yield timely guidance to primary care providers. We are not aware of previous studies exploring implementation strategies that support adoption of social determinants of action using electronic health and interventions, despite the pressing need for such guidance.

TRIAL REGISTRATION

clinicaltrials.gov, NCT03607617 , registration date: 7/31/2018-retrospectively registered.

Intensive home care packages for people with dementia: a realist evaluation protocol

BACKGROUND

Dementia presents a significant challenge to health systems and to the person and family affected. Home care is increasingly seen as a key service in addressing this challenge in a person-centred and cost-effective way. Intensive Home Care Packages (IHCPs) were introduced in Ireland to provide personalised and high levels of support for people with dementia to remain at home or be discharged home from hospital, and to build on the work of the HSE & Genio Dementia Programme. This realist evaluation is concerned with real world questions of feasibility and effectiveness; specifically understanding in what ways IHCPs work, how optimum outcomes are achieved, for whom and in what contexts do IHCPs work best.

METHODS

A mixed-method, multi-stakeholder study was designed within a realist evaluation conceptual framework. The process evaluation includes semi-structured interviews with health service staff at all levels, social network analysis and secondary database analysis; the outcomes evaluation includes quantitative measures and qualitative data collected through in-depth interviews with people with dementia and family carers; and the cost evaluation includes analysis of data from the Resource Utilisation in Dementia (RUD). The four stage cycle of realist evaluation is adopted, with iterative rounds of theory formulation, data collection and theory testing throughout.

DISCUSSION

This realist evaluation of a complex intervention involves a variety of data and perspectives in order to provide confidence in moving from hypothetical constructs about how IHCPs might work to explanations of potential or observable causal mechanisms. In spite of being a key form of service delivery in most healthcare systems, the ways in which home care works to produce the desired outcomes seems to be poorly understood. While there is much descriptive and comparative work, there is a lack of understanding regarding which patient groups might benefit most from home care, or the influence of different service or cultural contexts on outcomes from home care. As well as addressing the core research objectives, this study aims to make a contribution to the underlying theory of home care in ways that can progress our understanding of how outcomes are produced for home care recipients.

The role of nurse specialists in the delivery of integrated diabetes care: a cross-sectional survey of diabetes nurse specialist services

OBJECTIVES

International evidence suggests the diabetes nurse specialist (DNS) has a key role in supporting integrated management of diabetes. We examine whether hospital and community DNS currently support the integration of care, examine regional variation in aspects of the service relevant to the delivery of integrated care and identify barriers to service delivery and areas for improvement.

DESIGN

A cross-sectional survey of hospital and community-based DNS in Ireland.

METHODS

Between September 2015 and April 2016, a 67-item online survey, comprising closed and open questions on their clinical role, diabetes clinics, multidisciplinary working, and barriers and facilitators to service delivery, was administered to all eligible DNS (n=152) in Ireland. DNS were excluded if they were retired or on maternity leave or extended leave.

RESULTS

The response rate was 66.4% (n=101): 60.6% (n=74) and 89.3% (n=25) among hospital and community DNS, respectively. Most DNS had patients with stable (81.8%) and complicated type 2 diabetes mellitus (89.9%) attending their service. The majority were delivering nurse-led clinics (81.1%). Almost all DNS had a role liaising with (91%), and providing support and education to (95%), other professionals. However, only a third reported that there was local agreement on how their service should operate between the hospital and primary care. Barriers to service delivery that were experienced by DNS included deficits in the availability of specialist staff (allied health professionals, endocrinologists and DNS), insufficient space for clinics, structured education and issues with integration.

CONCLUSIONS

Delivering integrated diabetes care through a nurse specialist-led approach requires that wider service issues, including regional disparities in access to specialist resources and formalising agreements and protocols on multidisciplinary working between settings, be explicitly addressed.

The international generalisability of evidence for health policy: A cross country comparison of medication adherence following policy change

Copayments for prescriptions may increase morbidity and mortality via reductions in adherence to medications. Relevant data can inform policy to minimise such unintended effects. We explored the generalisability of evidence for copayments by comparing two international copayment polices, one in Massachusetts and one in Ireland, to assess whether effects on medication adherence were comparable. We used national prescription data for public health insurance programmes in Ireland and Medicaid data in the U.S. New users of oral anti-hypertensive, anti-hyperlipidaemic and diabetic drugs were included (total n=14,259 in U.S. and n=43,843 in Ireland). We examined changes in adherence in intervention and comparator groups in each setting using segmented linear regression with generalised estimating equations. In Massachusetts, a gradual decrease in adherence to anti-hypertensive medications of -1% per month following the policy occurred. In contrast, the response in Ireland was confined to a -2.9% decrease in adherence immediately following the policy, with no further decrease over the 8 month follow-up. Reductions in adherence to oral diabetes drugs were larger in the U.S. group in comparison to the Irish group. No difference in adherence changes between the two settings for anti-hyperlipidaemic drugs occurred. Evidence on cost-sharing for prescription medicines is not 'one size fits all'. Time since policy implementation and structural differences between health systems may influence the differential impact of copayment policies in international settings.