CREATE TABLE table_train_45 ("id" INT, "child_pugh_class" TEXT, "consent" BOOLEAN, "renal_disease" BOOLEAN, "hepatic_disease" BOOLEAN, "intestinal_obstruction" BOOLEAN, "age" FLOAT, "NOUSE" FLOAT)

chronic renal failure defined by creatinine clearance < 50 ml / min / 1.73 m2 ( ckd epi )
SELECT * FROM table_train_45 WHERE renal_disease = 1
SELECT * FROM "table_train_45" WHERE "renal_disease" = 1