Implementation of integrated care for diabetes mellitus type 2 by two Dutch care groups: a case study

Background Even though previous research has demonstrated improved outcomes of integrated care initiatives, it is not clear why and when integrated care works. This study aims to contribute to filling this knowledge gap by examining the implementation of integrated care for type 2 diabetes by two Dutch care groups. Methods An embedded single case study was conducted including 26 interviews with management staff, care purchasers and health professionals. The Context + Mechanism = Outcome Model was used to study the relationship between context factors, mechanisms and outcomes. Dutch integrated care involves care groups, bundled payments, patient involvement, health professional cooperation and task substitution, evidence-based care protocols and a shared clinical information system. Community involvement is not (yet) part of Dutch integrated care. Results Barriers to the implementation of integrated care included insufficient integration between the patient databases, decreased earnings for some health professionals, patients’ insufficient medical and policy-making expertise, resistance by general practitioner assistants due to perceived competition, too much care provided by practice nurses instead of general practitioners and the funding system incentivising the provision of care exactly as described in the care protocols. Facilitators included performance monitoring via the care chain information system, increased earnings for some health professionals, increased focus on self-management, innovators in primary and secondary care, diabetes nurses acting as integrators and financial incentives for guideline adherence. Economic and political context and health IT-related barriers were discussed as the most problematic areas of integrated care implementation. The implementation of integrated care led to improved communication and cooperation but also to insufficient and unnecessary care provision and deteriorated preconditions for person-centred care. Conclusions Dutch integrated diabetes care is still a work in progress, in the academic and the practice setting. This makes it difficult to establish whether overall quality of care has improved. Future efforts should focus on areas that this study found to be problematic or to not have received enough attention yet. Increased efforts are needed to improve the interoperability of the patient databases and to keep the negative consequences of the bundled payment system in check. Moreover, patient and community involvement should be incorporated

Development of the COMIC Model for the comprehensive evaluation of integrated care interventions

Objective To develop a model for the comprehensive evaluation of integrated care interventions that provides insights into when, why and how successful outcomes can be achieved. Methods A preliminary model was developed based on the Context + Mechanism + Outcome Model and further developed based on its application to a literature review, two case studies and an expert questionnaire. The COMIC Model for studying the Context, Outcomes and Mechanisms of Integrated Care interventions interventions assumes that an intervention is introduced using certain mechanisms (categorised according to the Chronic Care Model), which are met with particular context factors (described by barriers and facilitators and categorised according to the Implementation Model), which combined, contribute to specific outcomes (categorised by the WHO dimensions of quality of care). Results Application of the COMIC model to the literature review and expert questionnaires did not allow for statements to be made about the relationships between mechanisms, context and outcomes. Application to the two case studies made it possible to (1) comprehensively analyse the mechanisms, context and outcomes of the specific case, (2) to make the relationships between the mechanisms, context and outcomes within each case visible, and (3) to compare the two cases to each other in a systematic way that added value to the analysis. Discussion Using the COMIC Model makes it possible to comprehensively study the interplay of the mechanisms, context and outcomes of integrated care interventions and thereby provides insights into when, why and how integrated care contributes to improved outcomes