CREATE TABLE table_train_18 ("id" NUMBER, "with_cardiac_pacemaker" BOOLEAN, "neuromuscular_disease" BOOLEAN, "diabetic_polyneuropathy" BOOLEAN, "body_mass_index_bmi" FLOAT, "age" FLOAT, "NOUSE" FLOAT)

aged >= 18 years,
SELECT * FROM table_train_18 WHERE age >= 18
SELECT * FROM "table_train_18" WHERE "age" >= 18