Validation of the Korean version of the Kidney Transplant Understanding Tool

Purpose: Because there are no new and validated tools that assess knowledge of kidney transplant (KT), we aimed to construct the Korean version of the Kidney Transplant Understanding Tool (K-TUT) and to validate it. Methods: The Korean version of the K-TUT was established based on a translation and cultural adaptation process. A total of 69 items were reviewed by eight experts in KT for content validity, and a quantitative analysis was used to assess convergent and criterion validity (correlation coefficients), internal consistency (Kuder-Richardson 20, KR-20), test-retest reliability (intraclass correlation coefficient, ICC), item difficulty, and item discrimination for 29 KT candidates and 91 KT recipients. Results: The content validity of the Korean version of the K-TUT proved to be excellent as all items; the scale-level content validity index (S-CVI) in universal average was .86 and the S-CVI in average was .98. A positive association between the scores assessed by the Korean version of the K-TUT and knowledge level of KT (r = .74 for KT candidates and r = .57 for KT recipients, both p < .001) and treatment adherence (r = .31, p = .003) was shown. The overall ICC values are .91 for KT candidates and .88 for KT recipients. The KR-20 values were .89-.94 for KT candidates and .76-.78 for KT recipients. The mean difficulty and discrimination were .72 and .41 for KT candidates, and .76 and .33 for KT recipients. Conclusion: The Korean version of the K-TUT is proved to be a valid and reliable tool to assess KT-related knowledge in both KT candidates and recipients. (C) 2020 Korean Society of Nursing Science. Published by Elsevier B.V.