“…Of these, 11 were randomized controlled trials (RCTs) using different methods, 28–30,47,53,55,60,61,63,64,66 1 was a secondary analysis of data from an RCT, 65 and 2 studies also had an experimental design but were not RCTs 43,51 . Seven studies had a prospective study design, 41,42,46,48,49,56,68 3 studies were intervention development and piloting studies, 44,45,69 1 study was a mixed methods implementation study, 67 3 studies were retrospective observational studies, 40,57,59 1 study was an economic evaluation based on data from one of the retrospective studies, 58 1 was a cross-sectional study with a pre- and post-test survey, 50 1 was an evaluation of the procedure of a multidisciplinary deliberation clinic through an Ethics Committee in Nephrology, 54 1 was a case review and guide for nephrologists, 52 and 1 was a qualitative interview study with thematic analysis 62 . Patient involvement interventions were mostly evaluated in clinical settings 28–30,40–45,47–51,53–55,57–67 or simulation centers 46,56,68,69 .…”