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Complex adaptive systems (CAS) theory views healthcare as numerous sub-systems characterized by diverse agents that interact, self-organize, and continuously adapt. We apply this complexity science perspective to examine the extent to which CAS theory is a useful lens for designing and implementing health policies. We present the case of Health Links, a “low rules” policy intervention in Ontario, Canada aimed at stimulating the development of voluntary networks of health and social organizations to improve care coordination for the most frequent users of the healthcare system. Our sample consisted of stakeholders from regional governance bodies and organizations partnering in Health Links. Qualitative interview data were coded using the key complexity concepts of sensemaking, self-organization, interconnections, coevolution, and emergence. We found that the complexity-compatible policy design successfully stimulated local dynamics of flexibility, experimentation, and learning and that important mediating factors include leadership, readiness, relationship-building, role clarity, communication, and resources. However, we saw tensions between preferences for flexibility and standardization. Desirable developments occurred only in some settings and failed to flow upward to higher levels, resulting in a piecemeal and patchy landscape. Attention needs to be paid not only to local dynamics and processes, but also to regional and provincial levels to ensure that learning flows to the top and informs decision-making. We conclude that implementation of complexity-compatible policies needs a balance between flexibility and consistency and the right leadership to coordinate the two. Complexity-compatible policy for integrated healthcare is more than simply ‘letting a thousand flowers bloom’. [ABSTRACT FROM AUTHOR]

Frameworks for understanding integrated care risk underemphasizing the complexities of the development of integrated care in a local context. The objectives of this article are to (1) present a novel strategy for conceptualizing integrated care as developing through a series of milestones at the organizational level, and (2) present a typology of milestones empirically generated through the analysis of four cases of integrated community-based primary health care (ICBPHC) in Canada and New Zealand. Our paper reports on an analysis of 4 specific organizational case studies within a large dataset generated for an international multiple case study project of exemplar models of ICBPHC. Drawing on earlier analyses of 359 qualitative interviews with patients, caregivers, health care providers, managers, and policymakers, in this article we present a detailed analysis of 28 interviews with managers and leaders of local models of integrated care. We generated a detailed timeline of the development of integrated care as expressed by each participant, and synthesized themes across timelines within each case to identify specific milestone events. We then synthesized across cases to generate the broader milestone categories to which each event belongs. We generated 5 milestone categories containing 12 more specific milestone events. The milestone categories include (1) strategic relational, (2) strategic process change, (3) internal structural, (4) inter-organizational structural, and (5) external milestones. We propose a comprehensive framework of developmental milestones for integrated care. Milestones represent a compelling strategy for conceptualizing the development of integrated care. Practically, policymakers and health care leaders can support the implementation of integrated care by examining the history and context of a given model of care and identifying strategies to achieve milestones that will accelerate integrated care. Further research should document additional milestone events and advance the development of dynamic frameworks for integrated care. • Developmental milestones accelerate or decelerate achievement of integrated care. • 5 categories of milestones are identified. • A comprehensive framework for milestones of integrated care is proposed. • Implementation strategies should be based on past milestones achieved. [ABSTRACT FROM AUTHOR]