Understanding the complexity of population health interventions: assessing intervention system theory (ISyT).

Given their inherent complexity, we need a better understanding of what is happening inside the "black box" of population health interventions. The theory-driven intervention/evaluation paradigm is one approach to addressing this question. However, barriers related to semantic or practical issues stand in the way of its complete integration into evaluation designs. In this paper, we attempt to clarify how various theories, models and frameworks can contribute to developing a context-dependent theory, helping us to understand the black box of population health interventions and to acknowledge their complexity. To achieve this goal, we clarify what could be referred to as "theory" in the theory-driven evaluation of the interventional system, distinguishing it from other models, frameworks and classical theories. In order to evaluate the interventional system with a theory-driven paradigm, we put forward the concept of interventional system theory (ISyT), which combines a causal theory and an action model. We suggest that an ISyT could guide evaluation processes, whatever evaluation design is applied, and illustrate this alternative method through different examples of studies. We believe that such a clarification can help to promote the use of theories in complex intervention evaluations, and to identify ways of considering the transferability and scalability of interventions.

[Theoretical and practical challenges of proportionate universalism: a reviewAnálise dos desafios teóricos e práticos de universalismo proporcional]. / Desafíos teóricos y prácticos del universalismo proporcional: una revisión.

OBJECTIVE: In 2010, the principle of proportionate universalism (PU) has been proposed as a solution to reduce health inequalities. It had a great resonance but does not seem to have been widely applied and no guidelines exist on how to implement it. The two specific objectives of this scoping review were: (1) to describe the theoretical context in which PU was established, (2) to describe how researchers apply PU and related methodological issues. METHODS: We searched for all articles published until 6th of February 2020, mentioning "Proportionate Universalism" or its synonyms "Targeted universalism" OR "Progressive Universalism" as a topic in all Web of Science databases. RESULTS: This review of 55 articles allowed us a global vision around the question of PU regarding its theoretical foundations and practical implementation. PU principle is rooted in the social theories of universalism and targeting. It proposes to link these two aspects in order to achieve an effective reduction of health inequalities. Regarding practical implementation, PU interventions were rare and led to different interpretations. There are still many methodological and ethical challenges regarding conception and evaluation of PU interventions, including how to apply proportionality, and identification of needs. CONCLUSION: This review mapped available scientific literature on PU and its related concepts. PU principle originates from social theories. As highlighted by authors who implemented PU interventions, application raises many challenges from design to evaluation. Analysis of PU applications provided in this review answered to some of them but remaining methodological challenges could be addressed in further research.

OBJETIVO: Em 2010, o princípio do Universalismo Proporcional (UP) foi proposto como uma solução para reduzir as desigualdades na saúde. Houve uma grande receptividade, mas o princípio parece não ter sido amplamente aplicado e não há diretrizes sobre como implementá-lo. Os dois objetivos específicos desta análise de escopo foram: (1) descrever o contexto teórico no qual o UP foi estabelecido e (2) descrever como os pesquisadores aplicam o UP e questões metodológicas correlatas. MÉTODOS: Buscamos em todas as bases de dados científicas da Web todos os artigos publicados até 6 de fevereiro de 2020 que mencionavam, como tema, o "Universalismo Proporcional" ou seus sinônimos "Universalismo Visado" ou "Universalismo Progressivo". RESULTADOS: Essa análise de 55 artigos nos permitiu ter uma visão global relacionada com o UP, suas bases teóricas e sua implementação na prática. Os princípios do UP têm suas raízes nas teorias sociais do universalismo e na definição de metas. A proposta é vincular esses dois aspectos para atingir uma redução efetiva das desigualdades em saúde. Com relação ao aspecto prático da implementação, as intervenções de UP foram raras e levaram a diferentes interpretações. Ainda há muitos obstáculos metodológicos e éticos relativos ao conceito e à avaliação das intervenções de UP, inclusive sobre como aplicar o aspecto da proporcionalidade e a identificação das necessidades. CONCLUSÕES: Esta análise fez um mapeamento da literatura científica disponível sobre UP e seus conceitos correlatos. O princípio por trás do UP tem suas origens nas teorias sociais. Como destacam os autores que implementaram as intervenções de UP, sua aplicação produz muitas dificuldades, da elaboração à avaliação. A análise das aplicações de UP fornecidas nesta pesquisa permitiu a obtenção de algumas respostas. No entanto, pesquisas futuras poderiam abordar as dificuldades metodológicas remanescentes.

Development of a knowledge translation taxonomy in the field of health prevention: a participative study between researchers, decision-makers and field professionals.

OBJECTIVES: The current literature lacks a detailed and standardised description of public health knowledge translation (KT) activities designed to be applied at local levels of health systems. As part of an ongoing research project called the Transfert de connaissances en regions (TC-REG project), we aim to develop a local KT taxonomy in the field of health prevention by means of a participative study between researchers, decision-makers and field professionals. This KT taxonomy provides a comparative description of existing local health prevention KT strategies. METHODS: Two methods were used to design a participative process conducted in France to develop the taxonomy, combining professional meetings (two seminars) and qualitative interviews. The first step involved organising a seminar in Paris, attended by health prevention professionals from health agencies in four regions of France and regional non-profit organisations for health education and promotion. This led to the drafting of regional KT plans to be implemented in the four regions. In a second step, we conducted interviews to obtain a clear understanding of the KT activities implemented in the regions. Based on data from interviews, a KT taxonomy was drawn up and discussed during a second seminar. RESULTS: Our work resulted in a KT taxonomy composed of 35 standardised KT activities, grouped into 11 categories of KT activities, e.g. dissemination of evidence, support for use of evidence through processes and structures, KT advocacy, and so on. CONCLUSIONS: The taxonomy appears to be a promising tool for developing and evaluating KT plans for health prevention in local contexts by providing some concrete examples of potential KT activities (advocacy) and a comparison of the same activities and their outcomes (evaluation).

Theoretical and practical challenges of proportionate universalism: a review.

OBJECTIVE: In 2010, the principle of proportionate universalism (PU) has been proposed as a solution to reduce health inequalities. It had a great resonance but does not seem to have been widely applied and no guidelines exist on how to implement it.The two specific objectives of this scoping review were: (1) to describe the theoretical context in which PU was established, (2) to describe how researchers apply PU and related methodological issues. METHODS: We searched for all articles published until 6th of February 2020, mentioning "Proportionate Universalism" or its synonyms "Targeted universalism" OR "Progressive Universalism" as a topic in all Web of Science databases. RESULTS: This review of 55 articles allowed us a global vision around the question of PU regarding its theoretical foundations and practical implementation. PU principle is rooted in the social theories of universalism and targeting. It proposes to link these two aspects in order to achieve an effective reduction of health inequalities. Regarding practical implementation, PU interventions were rare and led to different interpretations. There are still many methodological and ethical challenges regarding conception and evaluation of PU interventions, including how to apply proportionality, and identification of needs. CONCLUSION: This review mapped available scientific literature on PU and its related concepts. PU principle originates from social theories. As highlighted by authors who implemented PU interventions, application raises many challenges from design to evaluation. Analysis of PU applications provided in this review answered to some of them but remaining methodological challenges could be addressed in further research.

OBJETIVO: En 2010 se propuso el principio del universalismo proporcional como solución para reducir las desigualdades en materia de salud. Aunque tuvo una gran resonancia, no parece haber sido aplicado ampliamente y no existen directrices sobre cómo aplicarlo. Los dos objetivos específicos de esta revisión sistemática exploratoria fueron: 1) describir el contexto teórico en el que se estableció el universalismo proporcional, y 2) describir cómo los investigadores aplican el universalismo proporcional y las cuestiones metodológicas relacionadas. MÉTODOS: Se buscó en todas las bases de datos de la Web of Science los artículos publicados hasta el 6 de febrero de 2020 que tuvieran como tema "universalismo proporcional" o sus sinónimos "universalismo dirigido" o "universalismo progresivo". RESULTADOS: Esta revisión de 55 artículos permitió tener una visión global del universalismo proporcional en cuanto a sus fundamentos teóricos y su aplicación práctica. El principio del universalismo proporcional se basa en las teorías sociales del universalismo y el direccionamiento, y propone vincular estos dos aspectos para lograr una reducción efectiva de las desigualdades en materia de salud. Respecto de su aplicación práctica, las intervenciones basadas en este principio son poco frecuentes y dan lugar a diferentes interpretaciones. Todavía existen muchos desafíos metodológicos y éticos en relación con la concepción y la evaluación de las intervenciones relacionadas con el universalismo proporcional, incluida la forma de aplicar la proporcionalidad y la identificación de las necesidades. CONCLUSIÓN: En esta revisión se llevó a cabo un mapeo de la literatura científica disponible sobre el universalismo proporcional y sus conceptos relacionados. Este principio se basa en teorías sociales. Tal como lo destacaron autores que implementaron intervenciones de universalismo proporcional, su aplicación plantea muchos desafíos, desde el diseño hasta la evaluación. El análisis de las aplicaciones del universalismo proporcional presentado en esta revisión respondió a algunos de ellos, pero los desafíos metodológicos restantes requieren ser abordados en futuras investigaciones.

Which design to evaluate complex interventions? Toward a methodological framework through a systematic review.

BACKGROUND: Evaluation of complex interventions (CI) is challenging for health researchers and requires innovative approaches. The objective of this work is to present the main methods used to evaluate CI. METHODS: A systematic review of the scientific literature was conducted to identify methods used for the evaluation of CI. We searched MEDLINE via PubMed databases for articles including an evaluation or a pilot study of a complex intervention, published in a ten-year period. Key-words of this research were ("complex intervention*" AND "evaluation"). RESULTS: Among 445 identified articles, 100 research results or protocols were included. Among them, 5 presented 2 different types of design in the same publication, thus our work included 105 designs. Individual randomized controlled trials (IRCT) represented 21.9% (n = 23) of evaluation designs, randomized clinical trials adaptations 44.8% (n = 47), quasi -experimental designs and cohort study 19.0% (n = 20), realist evaluation 6.7% (n = 7) and other cases studies and other approaches 8.6% (n = 9). A process/mechanisms analysis was included in 80% (n = 84) of these designs. CONCLUSION: A range of methods can be used successively or combined at various steps of the evaluation approach. A framework is proposed to situate each of the designs with respect to evaluation questions. The growing interest of researchers in alternative methods and the development of their use must be accompanied by conceptual and methodological research in order to more clearly define their principles of use.

From intervention to interventional system: towards greater theorization in population health intervention research.

BACKGROUND: Population health intervention research raises major conceptual and methodological issues. These require us to clarify what an intervention is and how best to address it. This paper aims to clarify the concepts of intervention and context and to propose a way to consider their interactions in evaluation studies, especially by addressing the mechanisms and using the theory-driven evaluation methodology. MAIN TEXT: This article synthesizes the notions of intervention and context. It suggests that we consider an "interventional system", defined as a set of interrelated human and non-human contextual agents within spatial and temporal boundaries generating mechanistic configurations - mechanisms - which are prerequisites for change in health. The evaluation focal point is no longer the interventional ingredients taken separately from the context, but rather mechanisms that punctuate the process of change. It encourages a move towards theorization in evaluation designs, in order to analyze the interventional system more effectively. More particularly, it promotes theory-driven evaluation, either alone or combined with experimental designs. CONCLUSION: Considering the intervention system, hybridizing paradigms in a process of theorization within evaluation designs, including different scientific disciplines, practitioners and intervention beneficiaries, may allow researchers a better understanding of what is being investigated and enable them to design the most appropriate methods and modalities for characterizing the interventional system. Evaluation methodologies should therefore be repositioned in relation to one another with regard to a new definition of "evidence", repositioning practitioners' expertise, qualitative paradigms and experimental questions in order to address the intervention system more profoundly.

Using theory of change to develop an intervention theory for designing and evaluating behavior change SDApps for healthy eating and physical exercise: the OCAPREV theory.

BACKGROUND: Connected health devices and applications (referred to hereafter as "SDApps" - Smart devices and applications) are being portrayed as a new way for prevention, with the promise of accessibility, effectiveness and personalization. Many effectiveness evaluations (experimental designs) with strong internal validity exist. While effectiveness does appear to vary, the mechanisms used by these devices have not yet been thoroughly investigated. This article seeks to unpack this black box, and describes the process of elaboration of an intervention theory for healthy eating and physical activity SDApps. It includes a set of requirements relative to their impact on social health inequalities. METHODS: To build this theory, we drew on theory-driven approaches and in particular on the theory of change (ToC) method. To this end, we developed a cumulative and iterative process combining scientific data from the literature with knowledge from experts (researchers and practitioners) and from patients or users. It was a 3-step process, as follows: 1 - identifying the evidence base; 2 - developing the theory through design intervention and creating realistic expectations, including in our case specific work on social health inequalities (SHIs); 3 - modeling process and outcome. RESULTS: We produced an evidence-based theory according to the ToC model, based on scientific evidence and knowledge from experts and users. It sets out a causal pathway leveraging 11 key mechanisms - theoretical domains - with which 50 behavior change techniques can be used towards 3 ultimate goals: Capacity, Opportunity, Motivation - Behavior (COM-B). Furthermore, the theory specifically integrates requirements relative to the impact on SHIs. CONCLUSIONS: This theory is an aid to SDAapp design and evaluation and it can be used to consider the question of the possible impact of SDApps on the increase in inequalities. Firstly, it enables developers to adopt a more overarching and thorough approach to supporting behavior change, and secondly it encourages comprehensive and contributive evaluations of existing SDApps. Lastly, it allows health inequalities to be fully considered.

[Elaboration of prevention norms: Need for ethical reflection]. / Élaboration des normes de prévention : une réflexion éthique nécessaire.

INTRODUCTION: Public health tries to modify existing social norms by setting up strategies to promote the emergence of norms that are more adapted to the objectives of good health and well-being. Prevention policies and the corresponding interventions concern health behaviours and are designed to modify the individual's habits, and contribute to defining new ways of being, acting and living. Prevention therefore involves numerous personal, cultural, social and collective values. An ethical reflection concerning the meaning, rationale and justice of these actions is therefore essential. The objective of this study is to characterize the ethical reflection at the time of creation of public health norms. METHODS: A narrative review, based on the Web of Science database covering journals of the various disciplines concerned, was conducted to address this issue. RESULTS: Thirty-four publications were selected, illustrating the numerous definitions and types of norms used in public health intervention strategies. Many stakeholders are involved in the creation of public health norms specialists, opinion leaders, and social stakeholders. Finally, although some publications stress that the use of prevention norms raises a number of ethical issues, no publication refers to the presence of a structured ethical reflection as part of this process. CONCLUSION: Ethical reflection is an essential part of prevention interventions and tools. What is the best way of achieving the best results? How to resolve conflicts of interests? These issues must be addressed when developing policies or programmes and can more effectively guide public health strategies and help to improve their acceptability and efficacy in populations.

The GREENH-City interventional research protocol on health in all policies.

BACKGROUND: This paper presents the research protocol of the GoveRnance for Equity, EnviroNment and Health in the City (GREENH-City) project funded by the National Institute for Cancer (Subvention N°2017-003-INCA). In France, health inequities have tended to increase since the late 1980s. Numerous studies show the influence of social, economic, geographic and political determinants on health inequities across the life course. Exposure to environmental factors is uneven across the population and may impact on health and health inequities. In cities, green spaces contribute to creating healthy settings which may help tackle health inequities. Health in All Policies (HiAP) represents one of the key strategies for addressing social and environmental determinants of health inequities. The objective of this research is to identify the most promising interventions to operationalize the HiAP approaches at the city level to tackle health inequities through urban green spaces. It is a participatory interventional research to analyze public policy in real life setting (WHO Healthy Cities). METHOD/DESIGN: It is a mixed method systemic study with a quantitative approach for the 80 cities and a comparative qualitative multiple case-studies of 6 cities. The research combines 3 different lens: 1/a political analysis of how municipalities apply HiAP to reduce social inequities of health through green space policies and interventions 2/a geographical and topological characterization of green spaces and 3/ on-site observations of the use of green spaces by the inhabitants. RESULTS: City profiles will be identified regarding their HiAP approaches and the extent to which these cities address social inequities in health as part of their green space policy action. The analysis of the transferability of the results will inform policy recommendations in the rest of the Health City Network and widely for the French municipalities. DISCUSSION/CONCLUSION: The study will help identify factors enabling the implementation of the HiAP approach at a municipal level, promoting the development of green spaces policies in urban areas in order to tackle the social inequities in health.

Correction to: The GREENH-City interventional research protocol on health in all policies.

After publication of the article [1], it has been brought to our attention that in the original publication the third author's name was spelt incorrectly. The correct spelling is "Emmanuelle Faure". This was previously spelt as "Emmannuelle Faure". The original article has been revised to reflect this.

[Complexity: concept and challenges for public health interventions]. / La complexité : concept et enjeux pour les interventions de santé publique.

Introduction: Since 2000, the notion of "complex interventions" has been emerging in the health research field. "Complex interventions" and "complexity" are commonly used terms, but they are generally not defined. Conceptual ambiguities persist concerning the notion of complexity. The objective of this exploratory review is to characterize the notion of complexity: What is complexity? Where does this notion come from and what does it cover? What are the consequences of complexity in the health field?Methods: To clarify the concept of complexity, a narrative review was conducted in the fields of humanities and social science, managerial economics, psychology and healthcare.Results: The concept of complexity, that can be attributed to Edgar Morin, has been the subject of appropriations, adaptations, and operations in multiple areas. Complexity consists of understanding the factors influencing individual decisions. In the field of healthcare, the concept of complexity is used more pragmatically and is defined by objective characteristics of interventions (defined as complex) or their contexts for the practical purposes of evaluation.Discussion: The notions of complexity and complex interventions have implications for researchers and users of the results of research. In particular, the notion of complexity is designed to provide a better understanding of the mechanism of effectiveness of interventions, support transferability and use by actors and decision-makers.

Exploratory study of the implications of research on the use of smart connected devices for prevention: a scoping review.

BACKGROUND: Smart devices and mobile applications are now an integral part of all aspects of everyday life. They are particularly numerous in the field of health, contributing to the movement called ehealth. What is the potential role of these devices as prevention supports? The purpose of this article is to provide an exploratory analysis of the use, efficacy and contribution to conventional prevention strategies. METHODS: To address this issue, we conducted a scoping-review on the basis of 105 publications from the fields of medicine and human sciences. RESULTS: Three dimensions of the use of smart devices in the field of health were identified: 1/a quantification tool allowing the users to measure their activities; 2/a tool of self-positioning in the community; 3/an interface between the medical world and the population, modifying the hierarchy of knowledge. However, few published studies have investigated the determinants of the efficacy of these devices and their impact on individual behaviours and professional health practices. CONCLUSION: Based on the hypothesis of possible integration of these devices in prevention policies, it would be interesting to investigate two research issues: how and under what psycho-socio-environmental conditions can smart devices contribute to the adoption of positive health behaviours? To what degree does the use of smart devices modify the health care professional-patient relationship? Finding answers to these questions could help to define the real place of these devices in prevention strategies by determining their complementarity with respect to other prevention strategies, and the conditions of their efficacy on behaviours and inequalities.

[Nudge in prevention an alternative approach or a dead end?]. / Le nudge en prévention troisième voie ou sortie de route ?

Prevention policies need to be more effective. Practitioners and decision-makers therefore need to innovate in the field of prevention policies and interventions by adapting methods or strategies used in other domains. Nudges, considered to be an attractive technique in view of its efficacy, are one of these innovations.However, the use of nudges in prevention policies raises ethical debates which will be summarized in this article. After recalling the definition of nudging, this article describes the ethical debates concerning three issues and emphasizes the way they can reflect a beneficial, democratic, freedom-based and autonomous society.In conclusion, this article encourages prevention practitioners and decision-makers to adopt a larger view before transferring strategies from other sectors and especially to consider all ethical issues.

Stakeholders' perceptions of transferability criteria for health promotion interventions: a case study.

BACKGROUND: The effects of health promotion interventions are the result not only of the interventions themselves, but also of the contexts in which they unfold. The objective of this study was to analyze, through stakeholders' discourse, the characteristics of an intervention that can influence its outcomes. METHODS: This case study was based on semi-structured interviews with health promotion stakeholders involved in a regional program (PRALIMAP). General hypotheses on transferability and on how the intervention is presumed to produce its effects were used to construct an interview guide. Interviews were analyzed using thematic coding. RESULTS: Twenty-three stakeholders were interviewed. Results showed stakeholders made few references to population and environment characteristics. Three themes emerged as significant for the stakeholders: implementation modalities and methodology, modalities used to mobilize actors; and transferability-promoting factors and barriers. CONCLUSION: Our work contributes to a better understanding not only of transferability factors, but also of stakeholders' perceptions of them, which are just as important, because those perceptions themselves are a factor in mobilization of actors, implementation, and transferability.

[A tool to facilitate transferability of health promotion interventions: ASTAIRE]. / Un outil pour accompagner la transférabilité des interventions en promotion de la santé: ASTAIRE.

The complexity of health promotion interventions raises the problem of the transferability of their results from one setting to another. A tool has been developed and validated: ASTAIRE (AnalySe de la Transférabilité et Accompagnement à l'adaptation des InteRventions en promotion de la santE) (analysis of the transferability and support to adaptation of health promotion interventions). The purpose of this article is to present the French language version of this tool to enable French-speaking stakeholders and scientists to adopt this tool and use it for the purposes of development of evidence-based health promotion. ASTAIRE comprises 23 transferability criteria classified in four categories: population, environment, implementation, transfer support. It is composed of two grids, one for reporting of initial interventions according to transferability criteria and the other to analyse the comparability of settings and to facilitate transfer. This tool is designed to support the choice of the intervention most adapted to the setting and to facilitate transfer of this intervention. Use of this tool can promote the development of evidence-based approaches according to an adaptive logic of interventions. Collective use of this tool in project logics can distinguish the key functions of interventions, which determine their efficacy and which must be transferred, from aspects related to the form, which can be adapted to the setting.

Conditions for adherence to videoconference-based programs promoting adapted physical activity in cancer patients: a realist evaluation.

BACKGROUND: Although moderate physical activity (PA) during cancer treatment has been associated with improved quality of life, reduced side effects, and even lower mortality, many barriers to successful implementation remain. Digital technology has been perceived as an effective lever for overcoming access and motivational issues but few studies have been performed to confirm this assumption. The "VISIO-AJUST" study explored the factors affecting the conditions of adherence to video-conference-based PA programs in patients undergoing cancer treatment. METHODS: The VISIO-AJUST study was based on a qualitative successive case approach, guided by the principles of the realist evaluation, and applied to two French programs of PA, following three main steps: (1) Identification of factors likely to influence conditions of patients' adherence; (2) Elaboration and testing of explanatory "Context-Mechanism-Outcome (CMO)" configurations; (3) Refinement of CMO configurations, in order to understand what, how, for whom, and under what circumstances video-conference-based PA programs work. RESULTS: Five main CMO configurations were found to be associated with adherence to video-conferencing-based PA programs, promoting (i) accessibility and a supportive environment for adapted physical activity, (ii) a setting conducive to sociability despite distance, (iii) Confidence and security of practice, (iv) a combination of several motivational levers in favor of continuity of effort and progress, (v) regularity of the sessions, progressiveness in the effort and evaluation of progress as a basis for the adoption of a regular physical practice. CONCLUSION: This study provides original insights into the use of videoconferencing to enable patients to improve their PA during cancer treatment. Future research with long-term follow-up would allow for a better understanding of the key conditions promoting sustainable behavior change.

The Influence of Educational Determinants on Children's Health: A Scoping Review of Reviews.

Objectives: Education is one of the most important social determinants shaping the development and wellbeing of children. The purpose of this review of reviews is to inform policymakers, practitioners and public health stakeholder involved in developing child-friendly policies outside of the healthcare system. Methods: We carried out a scoping review of reviews. It included 32 reviews. Results: We identified four main categories of educational determinants in relation to children's health: 1) the organization and structure of educational activities, 2) the interpersonal relations in the educational facilities and structures, 3) the spatial environment of educational facilities and structures, 4) social inequalities in the educational facilities and structures. This last category highlighted the capacity of education system to act on inequalities derived from the way social structures are organized. Conclusion: We suggest a conceptual framework for action which distinguishes structural determinant (gender, race, social class, etc.) and structuring determinant (public policy, systems of governance, organization of cultures/values consideration). Finally, we discuss on how these social structures and structuring determinants influence the intermediary educational determinants collated in the review.

A tool to analyze the transferability of health promotion interventions.

BACKGROUND: Health promotion interventions are often complex and not easily transferable from one setting to another. The objective of this article is to present the development of a tool to analyze the transferability of these interventions and to support their development and adaptation to new settings. METHODS: The concept mapping (CM) method was used. CM is helpful for generating a list of ideas associated with a concept and grouping them statistically. Researchers and stakeholders in the health promotion field were mobilized to participate in CM and generated a first list of transferability criteria. Duplicates were eliminated, and the shortened list was returned to the experts, scored for relevance and grouped into categories. Concept maps were created, then the project team selected the definitive map. From the final list of criteria thus structured, a tool to analyze transferability was created. This tool was subsequently tested by 15 project leaders and nine experts. RESULTS: In all, 18 experts participated in CM. After testing, a tool, named ASTAIRE, contained 23 criteria structured into four categories: population, environment, implementation, and support for transfer. It consists of two tools--one for reporting data from primary interventions and one for analyzing interventions' transferability and supporting their adaptation to new settings. CONCLUSION: The tool is helpful for selecting the intervention to transfer into the setting being considered and for supporting its adaptation. It also facilitates new interventions to be produced with more explicit transferability criteria.