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Chronic kidney disease (CKD) affects 50 million people globally. Several studies show the importance ofimplementing interventions that enhance patients’ knowledge about their disease. In 2011 the KidneyDisease Knowledge Survey (KiKS) was developed: a questionnaire that assesses the specific knowledgeabout chronic kidney disease in pre-dialysis patients.OBJECTIVETo translate to Spanish, culturally adapt and validate the Kidney Disease Knowledge Surveyquestionnaire in a population of patients with pre-dialysis chronic kidney disease.METHODSWe carried out a Spanish translation and cross-cultural adaptation of the Kidney Disease KnowledgeSurvey questionnaire. Subsequently, we determined its validity and reliability. We determined thevalidity through construct validity; and reliability by evaluating its internal consistency and its intra-observer reliability (test-retest).RESULTSWe found a good internal consistency (Kuder-Richardson = 0.85). The intra-observer reliability wasmeasured by the intra-class correlation coefficient that yielded a value of 0.78 (95% CI: 0.5-1.0). Thisvalue indicated a good reproducibility; also, the mean difference of -1.1 test-retest SD 6.0 (p = 0.369)confirms this finding.CONCLUSIONThe translated Spanish version of the Kidney Disease Knowledge Survey is acceptable and equivalentto the original version; it also has a good reliability, validity and reproducibility. Therefore, it can beused in a population of patients with pre-dialysis chronic kidney disease

Spanish version of the Kidney Disease Knowledge Survey (KiKS) in Peru: cross-cultural adaptation and validation