Psychometric evaluation of the culturally and linguistically translated Vietnamese chronic kidney disease self-management instrument.

AIMS: To translate and psychometrically test the modified chronic kidney disease self-management instrument in Vietnamese language.

BACKGROUND: Research on chronic kidney disease self-management is increasing although few patient-reported outcome measures are available in other languages.

DESIGN: This study involved instrument modification, translation, and cultural adaptation into Vietnamese followed by psychometric evaluation in a target population.

METHODS: Following modification, the instrument was translated by bilingual independent translators, and then an expert panel assessed content face validity. Reliability of the instrument was assessed by internal consistency and test-retest reliability in a sample of 293 people with chronic kidney disease. Then exploratory factor analysis was used to evaluate construct validity of the Vietnamese version.

RESULTS: The Vietnamese chronic kidney disease self-management instrument demonstrated excellent content face validity and internal consistency. The test-retest indicated good stability of the instrument over a 2-week period. Four factors were identified using exploratory factor analysis and were named understanding my kidney disease, taking action to manage my kidney disease, seeking social support, and adhering to a healthy diet.

CONCLUSIONS: The translated and modified version is a valid, reliable, and feasible patient-reported outcome measure of self-management behaviour in Vietnamese-speaking populations.