Scaling up complex interventions: insights from a realist synthesis.

Preventing chronic diseases, such as cancer, cardiovascular disease and diabetes, requires complex interventions, involving multi-component and multi-level efforts that are tailored to the contexts in which they are delivered. Despite an increasing number of complex interventions in public health, many fail to be 'scaled up'. This study aimed to increase understanding of how and under what conditions complex public health interventions may be scaled up to benefit more people and populations.A realist synthesis was conducted and discussed at an in-person workshop involving practitioners responsible for scaling up activities. Realist approaches view causality through the linkages between changes in contexts (C) that activate mechanisms (M), leading to specific outcomes (O) (CMO configurations). To focus this review, three cases of complex interventions that had been successfully scaled up were included: Vibrant Communities, Youth Build USA and Pathways to Education. A search strategy of published and grey literature related to each case was developed, involving searches of relevant databases and nominations from experts. Data extracted from included documents were classified according to CMO configurations within strategic themes. Findings were compared and contrasted with guidance from diffusion theory, and interpreted with knowledge users to identify practical implications and potential directions for future research.Four core mechanisms were identified, namely awareness, commitment, confidence and trust. These mechanisms were activated within two broad scaling up strategies, those of renewing and regenerating, and documenting success. Within each strategy, specific actions to change contexts included building partnerships, conducting evaluations, engaging political support and adapting funding models. These modified contexts triggered the identified mechanisms, leading to a range of scaling up outcomes, such as commitment of new communities, changes in relevant legislation, or agreements with new funding partners.This synthesis applies and advances theory, realist methods and the practice of scaling up complex interventions. Practitioners may benefit from a number of coordinated efforts, including conducting or commissioning evaluations at strategic moments, mobilising local and political support through relevant partnerships, and promoting ongoing knowledge exchange in peer learning networks. Action research studies guided by these findings, and studies on knowledge translation for realist syntheses are promising future directions.

Research as intervention in heart health promotion.

BACKGROUND: Capacity building in health promotion has traditionally involved training interventions to support knowledge, skill and resource building for effective practice. However, there is a need to understand how research can be used to support capacity building and practice. METHODS: Findings are based on a parallel case study comprising qualitative analysis of 66 key informant interviews from five provincial heart health projects (Manitoba, Prince Edward Island, Ontario, Saskatchewan, and Newfoundland and Labrador) as part of the Canadian Heart Health Dissemination Project. FINDINGS: Results indicate research was used primarily to monitor and report results about health promotion capacity and dissemination to stakeholders, and contribute to participatory processes. Respondents noted that research as intervention had an influence on five areas of health promotion capacity and practice: increased heart health promotion knowledge/skills; improved programming, planning and prioritizing; increased motivation for (heart) health promotion initiatives; and cultivation of relationships as well as buy-in. INTERPRETATION: Research was a complementary capacity-building activity, although it did not directly increase program implementation. These findings contribute to linking researchers, practitioners and community decision-makers in the process of enhancing health promotion practice.

Understanding facilitators of and barriers to health promotion practice.

The health promotion best practices literature is imbued with hope for knowledge mobilization, enhanced practice, and improved population health. Given constrained medical care systems, health promotion is key to reducing the significant burden of chronic disease. However, we have seen little evidence of change. This article investigates facilitators of, and barriers to, three stages of health promotion practice in public health organizations, interagency coalitions, and volunteer committees. The article focuses not on what works but why it does or does not, drawing on five case studies within the Canadian Heart Health Initiative. Results indicate that the presence or absence of appropriately committed and/or skilled people, funds and/or resources, and priority and/or interest are the most common factors affecting all stages of health promotion practice. The article extends the literature on internal and external factors affecting health promotion and highlights strategic influences to consider in support of effective health promotion practice.