Socioeconomic, clinical and nutritional factors on interdialytic weight gain in haemodialysis users

Objectives: The study aimed to evaluate the factors associated with interdialytic weight gain in users of haemodialysis services in a metropolitan region of Brazil. Methods: This is an cross-sectional epidemiological study with 1,024 individuals with chronic kidney disease on haemodialysis in Brazil. Interdialytic weight gain was evaluated by the percentage weight gain between one haemodialysis session and another. The variables included in the binary logistic regression analysis were selected by considering p< 0.10 in the bivariate test. Results: We demonstrated that having more years of study (OR=0.537;CI 95% = 0.310–0.931; p=0.027) and be overweight (OR=0.661;CI 95% = 0.461–0.948; p=0.024) or obese (OR=0.387;CI 95% = 0.246–0.608; p=