SOCIODEMOGRAPHIC AND CLINIC FACTORS ASSOCIATED WITH BODY MASS INDEX IN PATIENTS WITH CHRONIC KIDNEY DISEASE ON HEMODIALYSIS/ Factores sociodemograficos y clinicos asociados al indice de masa corporal en pacientes con enfermedad renal cronica en hemodialisis

Objective: To verify the factors associated with the Body Mass Index (BMI) in patients with chronic kidney disease on hemodialysis. Materials and methods: Cross-sectional analytical study conducted at a Hemodialysis Clinic in Belem-PA, Brazil. Socioeconomic data and physical activity practice were obtained through interviews with the application of a semi-structured questionnaire and biochemical and anthropometric data through consultation of patients' medical records. To identify the factors associated with BMI bivariate and multivariate analyses were performed with a hierarchical model. Results: Among the 91 patients evaluated 67.03% exhibited BMI < 24.9 kg/[m.sup.2]. The variables of occupation, physical activity and number of medications were significantly associated with BMI 25 kg/[m.sup.2]. Student patients were more likely not to have BMI 25 kg/[m.sup.2] (PR=1.45; CI:4.87-4.34, p