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A Theoretical Logic Model of Integration in Health Care


Michaela Kerrissey ,

Harvard Business School, US
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Russell Phillips,

Harvard Medical School, US
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Anna Sinaiko,

Harvard TH Chan School of Public Health, US
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Tsega Tamene,

Harvard TH Chan School of Public Health, US
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Bethany Maylone,

Harvard TH Chan School of Public Health, US
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Mark Friedberg,

Rand Corporation, US
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Sara Singer

Harvard TH Chan School of Public Health, US
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Introduction: Recent literature has described key dimensions of integration within health care organizations but has not explored relationships among them. Clarifying these relationships can improve efforts to compare and contrast studies of “integration” in health care.

Methods: To construct a novel theory of integration, we reviewed existing publications from health care and management literature. We synthesized and adapted elements from disparate integration frameworks in order to provide a more complete and contemporary representation relevant to the US healthcare context. The theoretical model was refined based on feedback from academic experts and clinical practitioners.

Results: We defined integration as “planned, thoughtful design of the care process for the benefit and protection of the patient” (Bohmer, Lawrence, & Singer, 2012), and we considered patient care to be integrated when it is coordinated (across professionals, facilities, support systems, over time, between visits) and tailored to patient and family needs, values, and preferences (Singer et al., 2011). We developed a logic model identifying five forms of integration as well as contextual factors that might affect integration and the outcomes that integration should theoretically produce. The five forms of integration include structural, functional, normative, interpersonal, and clinical. Structural and functional forms refer to organizational features such as governance structures and financial management, respectively, while interpersonal and clinical forms describe people and processes, such as teamwork and use of shared care plans (Nolte & McKee 2008; Shortell et al., 2008; Singer et al., 2011; Valentijn et al., 2013; van der Klauw et al. 2014). We define normative integration as the establishment and maintenance of a common culture and norms across units and organizations within a health system, and depict it as cutting across the other forms of integration (Valentijn et al., 2015). Contextual factors that might affect integration include external factors such as market structure and internal organizational factors like financial arrangements. Outcomes that integration might theoretically produce relate to health outcomes, clinical cost, patient experience and provider satisfaction. We suggest empirically testing a set of resulting hypotheses about the relationships among these dimensions of integrated care: (1) contextual factors are typically precursors to structural, functional, normative, and clinical integration; (2) greater structural and functional integration are associated with greater integration involving people and processes (interpersonal and clinical integration); (3) interpersonal and clinical integration produce better-integrated patient care, yielding superior health outcomes. We explore why results may be mixed for clinical cost, patient experience and provider satisfaction.

Discussion/conclusions: We present a novel, comprehensive logic model of care integration. As provider organizations in the US and elsewhere seek to better integrate care amid limited budgets, understanding relationships among elements of integration, context, and outcomes will inform decisions about resource allocation, implementation, and evaluation.

Limitations: This model is theoretically derived and requires empirical testing.

Suggestions for future research: This integration model can serve as a theoretical basis for future empirical research exploring the relationships among elements of integrated care and outcomes.


1- Bohmer, R., Lawrence, D., & Singer, S. J. Order from Chaos: Accelerating Care Integration (pp. 1–34). Boston, MA: Lucian Leape Institute and the National Patient Safety Foundation. 2012

2- Nolte E & McKee, M. (Eds.). Caring for people with chronic conditions. A health system perspective. Berkshire, England: Open University Press. 2008

3- Shortell SM, Gillies RR, & Anderson DA. Remaking healthcare in America (2nd ed). San Francisco, CA: Jossey-Bass. 2000 

4- Singer SJ, Burgers J, Friedberg M, Rosenthal M, Leape L, Schneider E. "Defining and measuring integrated patient care: promoting the next frontier in health care delivery." Medical Care Research and Review 2011;68.1: 112-127.

5- Valentijn, P. P., Schepman, S. M., Opheij, W., & Bruijnzeels, M. A. Understanding integrated care: a comprehensive conceptual framework based on the integrative functions of primary care. International Journal of Integrated Care, 13, e010. 2013

6- Valentijn, P., Boesveld, I., Klauw, Denise van der, Ruwaard, D., Strujis, J., Molema, J., Brujinzeels, M. and Vrijhoef Hubertus. “Towards a taxonomy for integrated care: a mixed-methods study,” International Journal of Integrated Care, Vol. 15. 2015

7- Van der Klauw D, Molema H, Grooten L, Vrijhoef H. “Identification of mechanisms enabling integrated care for patients with chronic diseases: A literature review,” in International Journal of Integrated Care, Vol. 14. 2014

How to Cite: Kerrissey M, Phillips R, Sinaiko A, Tamene T, Maylone B, Friedberg M, et al.. A Theoretical Logic Model of Integration in Health Care. International Journal of Integrated Care. 2017;17(5):A264. DOI:
Published on 17 Oct 2017.


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