Human-Centred Design & Development of a

Background: Coronary artery disease (CAD) commonly accompanies chronic kidney disease (CKD) and carries unique management considerations for people with CKD. Shared decision-making (SDM) is a collaborative approach in which patients and physicians make decisions together based on a shared understanding of the health condition, treatment options and attributes, patient values and preferences, and risk tolerance. Our objective was to support SDM by creating a decision aid for patients with CKD and physicians addressing invasive vs conservative CAD treatment options, which included personalized risk estimates for treatment option attributes, and identification of patient values and preferences. Methods: Applying human-centred design, informed by the International Patient Decision Aid Standard and Ottawa Decision Support Framework, we created a personalized Results: Thirty-two patients (47% aged < 65 years; 47% women) and 18 physicians (72% aged < 50 years; 22% women) evaluated successive decision-aid iterations, providing design and implementation perspectives. Most received decision-aid content positively, and the design was refined over 3 development iterations. Overarching development-informing themes were as follows: (i) facilitating patient-physician interactions and knowledge-sharing to enable SDM; (ii) responding to contextual end-user needs for decision-making; and (iii) supporting flexible workflow use and integration. The decision aid is available at: https://myheartandckd.ca. Conclusions: Human-centred design processes effectively guided creation of a decision aid for patients with CKD and physicians making shared CAD treatment decisions. Findings will inform future clinical implementation strategies.