The Fluid Intake Appraisal Inventory for low fluid intake among patients on haemodialysis: Translation and psychometric evaluation of the Danish version

Aims and objectives To translate and evaluate the psychometric properties of a Danish version of the Fluid Intake Appraisal Inventory (Da-FIAI) regarding reliability and validity. Background Patients on haemodialysis are advised to restrict their fluid intake, which often requires patients to change their way of life and health behaviour. Design Cross-sectional study. Methods The FIAI was translated to Danish by two sets of target translations and two sets of back-translations (n = 4). One hundred and ninety-five patients on haemodialysis needing ultrafiltration completed the questionnaire for the evaluation study of the Da-FIAI, and psychometric properties were evaluated. Results Criterion validity was supported, and the Da-FIAI had an excellent internal consistency; known-groups validity and the factor structure could not be confirmed in the Danish sample. Conclusions We have shown that the Da-FIAI is useful in a Danish haemodialysis population to score the patient's ability to avoid drinking in specific situations. Relevance to clinical practice Using the Da-FIAI in the continuing nurse-patient communication, nurses have a validated instrument to evaluate patients' self-efficacy in fluid intake management and systematically identify and advise patients who need additional support.