In this paper we approach medical Shared Decision-Making (SDM) from the perspective of the pragma-dialectical theory of argumentation. We develop an analytical tool for reconstructing the contributions of doctor and patient to the decision-making process, taking into account both the general characteristics of SDM and the different alternatives for the division of labour proposed in the medical literature. The tool can function as astarting point for well-founded evaluations of the reasonableness of these contributions.
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