128 SYNTHESIS OF THE RESULTS The results of steps 2 and 3 for both the patient and HCP intervention were combined in a final logic model of change. Based on this model, and the results from step 4 and 5, the final multi-component intervention for both CKD patients with LHL and HCPs was produced. MEASURES Interview Guides We used interview guides with closed and open-ended questions to facilitate data collection among patients, in steps 2 and 5. For step 2, the guide followed the framework of Haes and Bensing[39]. We asked experiences regarding various consultation aims: (1) fostering the relationship, (2) gathering information, (3) information provision, (4) decision making, (5) enabling disease and treatmentrelated behavior, and (6) responding to emotions. For step 5, the guide contained questions about usability, usefulness, comprehensibility and satisfaction with the intervention. Questionnaires For patients, during step 2, we administered the AAHLS questionnaire to determine HL level[33]. Patients answered ten 3-point Likert scaled items with scores 1, 2 or 3 per item, giving a maximum possible score of 30. Patients were considered to have LHL when they scored ≤25. Additionally, we asked questions on background characteristics, such as gender, age, education and comorbidities. The evaluation questionnaire in step 5 encompassed closed 3- or 5-point Likert scaled questions on usability, usefulness, comprehensibility and satisfaction. It also had two open questions to learn strengths and weaknesses of the intervention. For HCPs, the evaluation questionnaire in step 5 contained 7-point Likert scaled questions to estimate intervention effects on HL knowledge, self-efficacy and competences, and satisfaction with the training, derived from Kaper et al[37]. At this step, HCPs also filled in questions on their age, gender and professional background.
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