Chapter 5 98 based on the proportion of residents with low income and low educational attainment (CBS, 2022). Specifically, we referred to a list of 40 neighborhoods identified by the Dutch government that were originally selected for their high prevalence of socioeconomic challenges, making them a relevant benchmark for our study (Minister voor Wonen Wijken en Integratie, 2007 ). We took this approach to mitigate potential feelings of stigmatization that could arise from approaching participants based on their individual SEP measures. Eligible individuals were approached face-to-face during a training session to get to know them, explain the nature of the research and to invite them to participate (E.10). For recruiting current CR patients for the third phase, we contacted eligible patients based on the neighborhood SEP by phone. For recruiting the former CR patients in phases one and two, we emailed CR patients with a postal code within lowSEP criteria and who had been involved in earlier research at the rehabilitation facility and had consented to be contacted again for research activities. Health professionals were recruited through email and by posting a message on the rehabilitation facility’s intranet. Following the IeG’s recommendation (D.7), we carefully curated a diverse range of expertise among the health professionals involved in our study. This included the inclusion of a nurse, physiotherapist, dietician, psychologist, and social worker, ensuring a comprehensive and multidisciplinary approach to our research. In accordance with another IeG’s recommendation (R.1), we made sure to discuss and gain agreement from both our research team and the stakeholders at the CR facility on comprehensibility of all communications directed toward the target group. This included materials such as information letters, emails, phone call scripts, and consent forms. All patient participants received a 15-euro gift voucher for their participation (E.8). Figure 5.1 Overview schematic of the design process and recruitment 5.2.2.3 Phase one: Contextual inquiry and value specification To develop a thorough understanding of the context around and needs of cardiac patients with a low SEP throughout their rehabilitation journey (D.4), we used the design technique context mapping (Sanders & Stappers, 2012). Context mapping is a method that uses
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