Background: Environmental improvement is a priority for urban sustainability and health and achieving it requires transformative change in cities. An approach to achieving such change is to bring together researchers, decision-makers, and public groups in the creation of research and use of scientific evidence. Methods: This article describes the development of a programme theory for Complex Urban Systems for Sustainability and Health (CUSSH), a four-year Wellcome-funded research collaboration which aims to improve capacity to guide transformational health and environmental changes in cities. Results: Drawing on ideas about complex systems, programme evaluation, and transdisciplinary learning, we describe how the programme is understood to “work” in terms of its anticipated processes and resulting changes. The programme theory describes a chain of outputs that ultimately leads to improvement in city sustainability and health (described in an ‘action model’), and the kinds of changes that we expect CUSSH should lead to in people, processes, policies, practices, and research (described in a ‘change model’). Conclusions: Our paper adds to a growing body of research on the process of developing a comprehensive understanding of a transdisciplinary, multiagency, multi-context programme. The programme theory was developed collaboratively over two years. It involved a participatory process to ensure that a broad range of perspectives were included, to contribute to shared understanding across a multidisciplinary team. Examining our approach allowed an appreciation of the benefits and challenges of developing a programme theory for a complex, transdisciplinary research collaboration. Benefits included the development of teamworking and shared understanding and the use of programme theory in guiding evaluation. Challenges included changing membership within a large group, reaching agreement on what the theory would be ‘about’, and the inherent unpredictability of complex initiatives.
This scoping study aims to explore the relationships between urban green spaces (UGSs) and the onset, remission and recovery of cancer. We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) extension for scoping reviews (protocol published in 2018). Eligibility criteria for papers were: (1) to be concerned with UGSs, (2) reporting effects of UGSs on cancer-related outcomes including direct or indirect measures, (3) reporting randomized controlled trials, prospective cohort studies, case studies, observational studies, non-comparative studies, (4) in English or French. The search covered primary studies in the published and unpublished (grey) literatures searching by hand and electronic databases (MEDLINE, Green File, Cumulative Index to Nursing and Allied Health Literature and ScienceDirect). Among 1703 records screened by two reviewers independently, 29 were included for qualitative synthesis. We classify the cancers concerned and the effects reported i.e., protective effect, risk or without association. The most investigated cancers are bladder, breast and lung cancer. Our study also identified contributing factors and their mediating effects between UGSs and cancer. Even though the strength of the evidence of the associations between UGSs and cancer is still weak due to the low number of studies and their design, results highlight the wide variety of possible mediating factors between the use of green spaces and cancer occurrence, remission and/or prevention. Knowledge gaps and future research perspectives should be oriented to qualitative research on protective factors with an attention to equity in UGS access and use.
In France, there is increasing interest in health impact assessments (HIAs) and most are performed on urban projects. The field of expertise is still under development and mostly established within the public health sector. To date, in France, all HIAs conducted in urban planning are stand-alone HIAs disconnected from the required environmental impact assessment (EIA). The paper opens with an introduction of the close and complex relationship between health and urban planning, HIA and a description of key elements needed for understanding the French context. Then, the paper analyses the context and the implementation process for four HIAs in progress in order to understand the specific characteristics of urban development, identify the key stages for introducing a health perspective into urban projects, and extract avenues to be explored when adapting HIAs applied to urban planning in France. Using a qualitative multiple case study design, an analysis framework was built to compare several aspects of the four HIAs and made it possible to highlight three pathways for adapting HIA to the urban planning sector: the schedule, links between the EIA and HIA, and the complementarity of the initiatives to involve residents. Legal measures enable a point of contact that brings health institutions and cities closer together. HIA is yet another tool that public authorities now have at their fingertips to work together in strengthening democracy and in reducing social, geographical and environmental health inequalities. More research must be undertaken to develop an understanding of the practice-related context; to judge HIA's capacity to draw on existing approaches in different fields; and to explore the different avenues leading to increased health, wellbeing and equity.
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