2021 Volume 41 Pages 594-603
Aim: To develop the Japanese version of the Chronic Kidney Disease Self-Care scale (CKDSC-J) for examining cross-cultural validity and evaluating self-care behavior as a secondary factor.
Methods: The CKDSC was first translated into Japanese using a 5-factor structured model with 16 items and then back-translated. Next, we conducted a survey for predialysis patients with chronic kidney disease (CKD) grade G3–G5. To verify the cross-cultural validity of the CKDSC, we performed a confirmatory factor analysis (CFA). We created a 5-factor secondary model of the primary self-care behavior evaluation scale (15 items; CKDSC-J), and examined internal consistency and the difference in CKDSC-J scores for CKD grade and nutritionist education.
Results: Participants comprised 229 predialysis patients. The CFA revealed that both the CKDSC (CFI = .991, RMSEA = .047) and the secondary model (CKDSC-J; CFI = .993, RMSEA = .042) fit the data well. Additionally, the internal consistency was high for the CKDSC-J at .848 and ranged from .823–.941 for the factors. The CKDSC-J score showed significant differences when compared with CKD grade and nutritionist education, which proved construct validity.
Conclusion: The findings suggest that the CKDSC-J can effectively evaluate daily self-care behavior among predialysis patients.
