Validation of the Dutch self-efficacy scale for fluid-restriction adherence of haemodialysis patients

Abstract

Self-efficacy is an influencing factor on the adherence to the fluid restriction of haemodialysis patients. By supporting self-efficacy, behaviour changes and the adherence improves, therefore insight in patients self-efficacy is necessary. The Swedish ‘Fluid Intake Appraisal Inventory’ (FIAI) is translated into Dutch, by forward and backward-translation, and has been validated. Respondents were recruited from one dialysis centre from the Netherlands. Thirty-three patients participated. Good content validity, and a significant negative correlation between interdialytic weight gain and self-efficacy, were found. The internal consistency was high (Cronbach’s alpha = 0.982) as was the stability (0.823 Spearman’s rho). These findings indicate that the Dutch FIAI can be used in clinical practice as self-efficacy screening instrument for adult haemodialysis patients with a fluid restriction. Further research is recommended, to validate the FIAI for peritoneal dialysis patients and haemodialysis patients from other countries.