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To unravel the complex challenges addressed by design, oftentimes it can benecessary for researchers to participate in design processes rather than makeobservations from outside. However, ‘participation’ has different meanings indifferent kinds of design research, and research outcomes will depend on theform of participation chosen. Through a Dimensional Analysis, we establishseven dimensions on how participation in design research can be classified interms of 1) the researcher-designer role, 2) the aim of the project, 3) the maincontribution, 4) the activities of the researcher, 5) if it is a single or multi-casestudy, 6) the scientific reporting on the project, and 7) the kind of knowledgeproduced. This overview aims to assist researchers in communicating howchoices for a particular participatory approach contribute to knowledgeproduction in design research.

The Quadruple Aim is a framework which prioritizes four 'aims', or dimensions of performance, for innovating in the healthcare domain, respectively: 1) enhancing the individual experience of care; 2) improving the work life of health care clinicians and staff; 3) improving the health of populations; and 4) reducing the per capita cost of care. In this contribution, recent literature providing examples of design research in the eHealth domain is reviewed to answer the research question: 'in which measure has design research contributed to each of the 'four aims' of eHealth innovation in the past five years?'. The results of the review are presented and employed to draw three main observations: 1) design researchers in eHealth seem to be largely focused on improving experiences of care, either patients' or health professionals'; 2) design researchers' contribution on reducing per capita costs of care appears to be less pronounced, which is outlined as a point for improvement; and 3) in a considerable amount of reviewed contributions, design researchers appear to be contributing to multiple 'aims' at once. In this subgroup of reviewed contributions, several disciplinary areas and types of stakeholders interact and integrate through design research activities. The latter observation leads to a reflection on the strategic role of design research in the contexts of the convergence revolution and of the non-communicable disease crisis. Implications of this reflection for design researchers are recognized in the opportunity and timeliness to develop eHealth-specific ways to orchestrate design integration. A direction for further research in this sense is identified in the use of sensory and self-monitored data as a boundary object for eHealth innovation. The prospective value of this direction is finally exemplified through the case of blood pressure.