“…The rule base of a fuzzy system establishes a relationship between the independent variables, and they are used to associate terms based on premises, with the aim of creating a statement (Junior et al, 2020). For the nephrology area, the following rules were used for the implementation of the model, considering the variables obesity, diabetes, and hypertension: (i) If Obesity is high, Diabetes is medium, and Hypertension is high, so the growth is high; (ii) If Obesity is high, Diabetes is medium, and Hypertension is normal, so the growth is normal; and (iii) If Obesity is low, Diabetes is low, and Hypertension is normal, so the growth is low.…”