• Knut Stavem and Rüdiger Ganss.
• Medical Department, Akershus University Hospital, Lørenskog, Norway. knut.stavem@klinmed.uio.no
• Bmc Nephrol. 2006 Jan 1; 7: 17.

BackgroundThe aim of the study was to validate the Norwegian version of a self-administered 43-item questionnaire designed to assess quality of life in kidney transplant recipients, the End-Stage Renal Disease Symptom Checklist--Transplantation Module (ESRD-SCL).MethodsIn total, 53 kidney transplant recipients from one university-affiliated hospital responded to a questionnaire including the ESRD-SCL and the Short Form 36 (SF-36). We assessed internal consistency reliability and test-retest reliability with 2 weeks between assessments. Construct validity was assessed by correlations of the ESRD-SCL subscales with related and unrelated SF-36 scales, demographic, and clinical characteristics.ResultsSubscales of the ESRD-SCL showed good internal consistency reliability (Cronbach's = 0.72-0.81) and for the aggregate total scale alpha was 0.94. Test-retest reliability median 14 days apart was excellent with intraclass coefficients ranging from 0.87 to 0.95. The pattern of correlations of the ESRD-SCL scales with related and unrelated scales SF-36 scales and demographic and clinical characteristics gave support to the construct validity of the ESRD-SCL.ConclusionThe Norwegian translation of the ESRD-SCL showed satisfactory internal consistency reliability, test-retest reliability and construct validity, at the level of the original German version.

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