Fig. 4From: The association of dialysis adequacy, body mass index, and mortality among hemodialysis patientsUrea reduction ratio as an alternative index of dialysis adequacy and associated hazard ratio (95% confidence interval) for all-cause mortality in overall cohort (a) and patients with body mass index (BMI) <20 kg/m2, 20 to <23 kg/m2, and ≥23 kg/m2 (b, c, and d, respectively)Back to article page