CREATE TABLE table_train_75 ("id" INT, "pregnancy_or_lactation" BOOLEAN, "alzheimer" BOOLEAN, "alzheimer_family_history" BOOLEAN, "body_mass_index_bmi" FLOAT, "age" FLOAT, "NOUSE" FLOAT)

we will limit the bmi to < 40 kg / m2 because of weight limits of the scanner bed and width limits of the mri.
SELECT * FROM table_train_75 WHERE body_mass_index_bmi < 40
SELECT * FROM "table_train_75" WHERE "body_mass_index_bmi" < 40