This paper describes the design of the LIKE programme, which aims to tackle the complex problem of childhood overweight and obesity in 10–14-year-old adolescents using a systems dynamics and participatory approach. The LIKE programme focuses on the transition period from 10-years-old to teenager and was implemented in collaboration with the Amsterdam Healthy Weight Programme (AHWP) in Amsterdam-East, the Netherlands. The aim is to develop, implement and evaluate an integrated action programme at the levels of family, school, neighbourhood, health care and city. Following the principles of Participatory Action Research (PAR), we worked with our population and societal stakeholders as co-creators. Applying a system lens, we first obtained a dynamic picture of the pre-existing systems that shape adolescents’ behaviour relating to diet, physical activity, sleep and screen use. The subsequent action programme development was dynamic and adaptive, including quick actions focusing on system elements (quick evaluating, adapting and possibly catalysing further action) and more long-term actions focusing on system goals and/or paradigm change. The programme is supported by a developmental systems evaluation and the Intervention Level Framework, supplemented with routinely collected data on weight status and health behaviour change over a period of five years. In the coming years, we will report how this approach has worked to provide a robust understanding of the programme’s effectiveness within a complex dynamic system. In the meantime, we hope our study design serves as a source of inspiration for other public health intervention studies in complex systems.

Background: Systems thinking embraces the complexity of public health problems, including childhood overweight and obesity. It aids in understanding how factors are interrelated, and it can be targeted to produce favourable changes in a system. There is a growing call for systems approaches in public health research, yet limited practical guidance is available on how to evaluate public health programmes within complex adaptive systems. The aim of this paper is to present an evaluation framework that supports researchers in designing systems evaluations in a comprehensive and practical way. Methods: We searched the literature for existing public health systems evaluation studies. Key characteristics on how to conduct a systems evaluation were extracted and compared across studies. Next, we overlaid the identified characteristics to the context of the Lifestyle Innovations Based on Youth Knowledge and Experience (LIKE) programme evaluation and analyzed which characteristics were essential to carry out the LIKE evaluation. This resulted in the Evaluation of Programmes in Complex Adaptive Systems (ENCOMPASS) framework. Results: The ENCOMPASS framework includes five iterative stages: (1) adopting a system dynamics perspective on the overall evaluation design; (2) defining the system boundaries; (3) understanding the pre-existing system to inform system changes; (4) monitoring dynamic programme output at different system levels; and (5) measuring programme outcome and impact in terms of system changes. Conclusions: The value of ENCOMPASS lies in the integration of key characteristics from existing systems evaluation studies, as well as in its practical, applied focus. It can be employed in evaluating public health programmes in complex adaptive systems. Furthermore, ENCOMPASS provides guidance for the entire evaluation process, all the way from understanding the system to developing actions to change it and to measuring system changes. By the nature of systems thinking, the ENCOMPASS framework will likely evolve further over time, as the field expands with more completed studies.

There is a dualism in current policy discourses on public health between neoliberal conceptions of health, and health as a product of social conditions. These conceptions also co-exist in the narratives of citizens. In this qualitative study carried out in the Netherlands, we analysed how people living in structural vulnerability perceive the potential tension of this dualism. Whereas the respondents’ narratives undoubtedly reflect the neoliberal view on health responsibility, their life stories revealed how health was a product of intergenerational transmission of poverty, violence and ill health. Neoliberal policies that expect citizens to minimise health risks were seen as unrealistic and raised feelings of apathy and fatalism. Behavioural messages were considered to oppose personal autonomy. Instead, the respondents appeared to envision health as a joint, balanced effort by themselves, their social network and public services. The tension between their own view on responsibility and the neoliberal view negatively affected their sense of self. These feelings were strengthened by the fact that the respondents felt abandoned by a government that calls upon self-sufficiency to deal with problems outside their control. On the other hand, they also stressed the importance of agency, particularly in breaking vicious transgenerational cycles. These findings indicate that the views of people living in disadvantaged neighbourhoods require further elucidation to develop a more nuanced and balanced view on responsibilities for health in public policies, and thus to prevent ignoring the problems faced by people who do not meet the expectations of current neoliberal policies.

BackgroundA combination of increasing urbanization, behaviour change, and lack of health services in slums put the urban poor specifically at risk of cardiovascular disease (CVD). This study aimed ...

Background: The increasing diversity of the Western-European population demands identification of potential ethnic healthcare inequities. We developed a framework that helps researchers in interpreting ethnic inequalities in healthcare consumption in equity terms. From this framework, we develop recommendations for the design of future studies. Methods: The framework was developed by analysing three typical studies on ethnic inequalities in healthcare consumption with respect to the potential of interpreting their results as healthcare inequities. Results: Analysing the effects of ethnic variations in healthcare consumption on health outcomes provides important clues about the presence of potential ethnic healthcare inequities. Interpretation of ethnic variations in healthcare consumption as potentially inequitable requires appropriate adjustment for medical need for healthcare, patient preferences and treatment adherence. Because of the central position of medical need, studies need to be disease-specific and based on standardized assessment of risk factors and disease characteristics. A longitudinal study design is necessary to prevent reverse causation. Conclusion: The framework shows that ethnic inequalities in healthcare consumption can be justified if healthcare received meets the need for healthcare in all groups and is in accordance with informed patient preferences. It also shows that ethnic equality in healthcare consumption may hide healthcare inequities. We recommend further research on ethnic healthcare inequities using multi-ethnic cohort designs combined with linkage to healthcare registries. We also recommend research to identify clinically relevant ethnic differences in disease profiles and optimization of treatment regimens.

Summary: Group‐level obesity can be seen as an emergent property of a complex system, consisting of feedback loops between individual body weight perception, individual weight‐related behaviour and group‐level social norms (a product of group‐level ‘normal' body mass index (BMI) and sociocultural ‘ideal' BMI). As overweight becomes normal, the norm might be counteracting health awareness in shaping individual weight‐related behaviour. System dynamics modelling facilitates understanding and simulating this system's emergent behaviour. We constructed six system dynamics models (SDMs) based on an expert‐informed causal loop diagram and data from six sociocultural groups (Dutch, Moroccan and South‐Asian Surinamese men and women). The SDMs served to explore the effect of three scenarios on group‐level BMI: ‘what if' weight‐related behaviour were driven by (1) health awareness, (2) norms or (3) a combination of the two. Median BMI decreased approximately 50% and 30% less in scenarios 2 and 3, respectively, than in 1. In men, the drop in BMI was approximately two times larger in scenario 1 versus 3, whereas in women, the drop was approximately equal in these scenarios. This study indicates that the overweight norm in men holds group‐level BMI close to overweight despite health awareness. Since norms are counteracting health awareness less strongly in women, other drivers of obesity must be more relevant.