No abstract

SummaryEvaluating a person's suitability for living organ donation is crucial, consisting not only of a medical but also of a thorough psychosocial screening. We performed a systematic literature review of guidelines, consensus statements, and protocols on the content and process of psychosocial screening of living kidney and liver donor candidates. We searched PubMed, Embase, CINAHL, and PsycINFO until June 22, 2011, following the PRISMA guidelines, complemented by scrutinizing guidelines databases and references of identified publications. Thirty-four publications were identified, including seven guidelines, six consensus statements, and 21 protocols or programs. Guidelines and consensus statements were inconsistent and lacked concreteness for both their content and process, possibly explaining the observed variability in center-specific evaluation protocols and programs. Overall, recommended screening criteria are not evidence-based and an operational definition of the concept "psychosocial" is missing, causing heterogeneity in terminology. Variation also exists on methods used to psychosocially evaluate potential donors. The scientific basis of predonation psychosocial evaluation needs to be strengthened. There is a need for high-quality prospective psychosocial outcome studies in living donors, a uniform terminology to label psychosocial screening criteria, and validated instruments to identify risk factors.

Knowledge and communication are identified as modifiable factors that are associated with the likelihood of identifying a potential living donor for LDKT. This observation makes knowledge and communication targets for interventions to reduce inequality in access to LDKT.

SummaryKnowledge is a prerequisite for promoting well-informed decision-making. Nevertheless, there is no validated and standardized test to assess the level of knowledge among renal patients regarding kidney disease and all treatment options. Therefore, the objective of this study was to investigate the psychometric properties of such a questionnaire for use in research and practice. A 30-item list was validated in four groups: (1) 187 patients on dialysis, (2) 82 patients who were undergoing living donor kidney transplantation the following day, (3) the general population of Dutch residents (n = 515) and (4) North American residents (n = 550). The psychometric properties of the questionnaire were examined using multidimensional item response theory (MIRT). Norm references were also calculated. Five items were found to distort ability estimates (Differential item functioning; DIF). MIRT analyses were subsequently carried out for the remaining 25 items. Almost all items showed good discrimination and difficulty parameters based on the fitted model. Two stable dimensions with 21 items were retrieved for which norm references for the Dutch and North American, dialysis and transplantation groups were calculated. This study resulted in a thorough questionnaire, the Rotterdam renal replacement knowledge-test, which enables reliable testing of patient's knowledge on kidney disease and treatment options in clinic and research.