Study protocol: healthy urban living and ageing in place (HULAP): an international, mixed methods study examining the associations between physical activity, built and social environments for older adults the UK and Brazil

Abstract Background The ability to ‘age in place’ is dependent on a range of inter-personal, social and built environment attributes, with the latter being a key area for potential intervention. There is an emerging body of evidence that indicates the type of built environment features that may best support age friendly communities, but there is a need to expand and consolidate this, while generating a better understanding of how on how research findings can be most effectively be translated in to policy and practice. Methods The study is based on two case study cities, Curtiba (Brazil) and Belfast (UK), which have highly contrasting physical, social and policy environments. The study deploys a mix methods approach, mirrored in each city. This includes the recruitment of 300 participants in each city to wear GPS and accelerometers, a survey capturing physical functioning and other personal attributes, as well as their perception of their local environment using NEWS-A. The study will also measure the built environments of the cities using GIS and develop a tool for auditing the routes used by participants around their neighbourhoods. The study seeks to comparatively map the policy actors and resources involved in healthy ageing in the two cities through interviews, focus groups and discourse analysis. Finally, the study has a significant knowledge exchange component, including the development of a tool to assess the capacities of both researchers and research users to maximise the impact of the research findings. Discussion The HULAP study has been designed and implemented by a multi-disciplinary team and integrates differing methodologies to purposefully impact on policy and practice on healthy ageing in high and low-middle income countries. It has particular strengths in its combination of objective and self-reported measures using validated tools and the integration of GPS, accelerometer and GIS data to provide a robust assessment of ‘spatial energetics’. The strong knowledge exchange strand means that the study is expected to also contribute to our understanding of how to maximise research impact in this field and create effective evidence for linking older adult’s physical activity with the social, built and policy environments

Accessibility and implementation in the UK NHS services of an effective depression relapse prevention programme:learning from mindfulness-based cognitive therapy through a mixed-methods study

Background: Depression affects as many as one in five people in their lifetime and often runs a recurrent lifetime course. Mindfulness-based cognitive therapy (MBCT) is an effective psychosocial approach that aims to help people at risk of depressive relapse to learn skills to stay well. However, there is an ‘implementation cliff’: access to those who could benefit from MBCT is variable and little is known about why that is the case, and how to promote sustainable implementation. As such, this study fills a gap in the literature about the implementation of MBCT. Objectives: To describe the existing provision of MBCT in the UK NHS, develop an understanding of the perceived costs and benefits of MBCT implementation, and explore the barriers and critical success factors for enhanced accessibility. We aimed to synthesise the evidence from multiple data sources to create an explanatory framework of the how and why of implementation, and to co-develop an implementation resource with key stakeholders. Design: A two-phase qualitative, exploratory and explanatory study, which was conceptually underpinned by the Promoting Action on Research Implementation in Health Services framework. Setting: UK NHS services. Methods: Phase 1 involved interviews with participants from 40 areas across the UK about the current provision of MBCT. Phase 2 involved 10 case studies purposively sampled with differing degrees of MBCT provision, and from each UK country. Case study methods included interviews with key stakeholders, including commissioners, managers, MBCT practitioners and teachers, and service users. Observations were conducted and key documents were also collected. Data were analysed using a modified approach to framework analysis. Emerging findings were verified through stakeholder discussions and workshops. Results: Phase 1: access to and the format of MBCT provision across the NHS remains variable. NHS services have typically adapted MBCT to their context and its integration into care pathways was also highly variable even within the same trust or health board. Participants’ accounts revealed stories of implementation journeys that were driven by committed individuals that were sometimes met by management commitment. Phase 2: a number of explanations emerged that explained successful implementation. Critically, facilitation was the central role of the MBCT implementers, who were self-designated individuals who ‘championed’ implementation, created networks and over time mobilised top-down organisational support. Our explanatory framework mapped out a prototypical implementation journey, often over many years. This involved implementers working through grassroots initiatives and over time mobilising top-down organisational support, and a continual fitting of evidence, with the MBCT intervention, contextual factors and the training/supervision of MBCT teachers. Key pivot points in the journey provided windows of challenge or opportunity. Limitations: The findings are largely based on informants’ accounts and, therefore, are at risk of the bias of self-reporting. Conclusions: Although access to MBCT across the UK is improving, it remains very patchy. This study provides an explanatory framework that helps us understand what facilitates and supports sustainable MBCT implementation. Future work: The framework and stakeholder workshops are being used to develop online implementation guidance

High-sensitivity troponin assays for early rule-out of acute myocardial infarction in people with acute chest pain: a systematic review and economic evaluation

BACKGROUND: Early diagnosis of acute myocardial infarction is important, but only 20% of emergency admissions for chest pain will actually have an acute myocardial infarction. High-sensitivity cardiac troponin assays may allow rapid rule out of myocardial infarction and avoid unnecessary hospital admissions. OBJECTIVES: To assess the clinical effectiveness and cost-effectiveness of high-sensitivity cardiac troponin assays for the management of adults presenting with acute chest pain, in particular for the early rule-out of acute myocardial infarction. METHODS: Sixteen databases were searched up to September 2019. Review methods followed published guidelines. Studies were assessed for quality using appropriate risk-of-bias tools. The bivariate model was used to estimate summary sensitivity and specificity for meta-analyses involving four or more studies; otherwise, random-effects logistic regression was used. The health economic analysis considered the long-term costs and quality-adjusted life-years associated with different troponin testing methods. The de novo model consisted of a decision tree and a state-transition cohort model. A lifetime time horizon (of 60 years) was used. RESULTS: Thirty-seven studies (123 publications) were included in the review. The high-sensitivity cardiac troponin test strategies evaluated are defined by the combination of four factors (i.e. assay, number and timing of tests, and threshold concentration), resulting in a large number of possible combinations. Clinical opinion indicated a minimum clinically acceptable sensitivity of 97%. When considering single test strategies, only those using a threshold at or near to the limit of detection for the assay, in a sample taken at presentation, met the minimum clinically acceptable sensitivity criterion. The majority of the multiple test strategies that met this criterion comprised an initial rule-out step, based on high-sensitivity cardiac troponin levels in a sample taken on presentation and a minimum symptom duration, and a second stage for patients not meeting the initial rule-out criteria, based on presentation levels of high-sensitivity cardiac troponin and absolute change after 1, 2 or 3 hours. Two large cluster randomised controlled trials found that implementation of an early rule-out pathway for myocardial infarction reduced length of stay and rate of hospital admission without increasing cardiac events. In the base-case analysis, standard troponin testing was both the most effective and the most costly. Other testing strategies with a sensitivity of 100% (subject to uncertainty) were almost equally effective, resulting in the same life-year and quality-adjusted life-year gain at up to four decimal places. Comparisons based on the next best alternative showed that for willingness-to-pay values below £8455 per quality-adjusted life-year, the Access High Sensitivity Troponin I (Beckman Coulter, Brea, CA, USA) [(symptoms > 3 hours AND  £20,190 per quality-adjusted life-year, the Dimension Vista® High-Sensitivity Troponin I (Siemens Healthcare, Erlangen, Germany) (< 5 ng/l at 0 hours AND Δ < 2 ng/l at 0 to 1 hours) would be cost-effective. CONCLUSIONS: High-sensitivity cardiac troponin testing may be cost-effective compared with standard troponin testing. STUDY REGISTRATION: This study is registered as PROSPERO CRD42019154716. FUNDING: This project was funded by the National Institute for Health Research (NIHR) Evidence Synthesis programme and will be published in full in Health Technology Assessment; Vol. 25, No. 33. See the NIHR Journals Library website for further project information