passages.id: split_5_test_2252_passage
passages.type: progene_text
passages.text: A general linear model was used to analyze differences of age , albumin , creatinine , blood urea nitrogen ( BUN ) , and hematocrit ; categorical data analysis to evaluate body mass index ( BMI ) , grouped into four categories : < 19 , 19-25 ( < 25 ) , 25-30 ( < 30 ) , and 30 + ; and logistic regression to assess the likelihood of initiating PD versus HD .