CREATE TABLE table_train_20 ("id" INT, "exercise_rehabilitation" BOOLEAN, "severe_sepsis" BOOLEAN, "active_infection" BOOLEAN, "mental_status" BOOLEAN, "functional_disability" BOOLEAN, "septic_shock" BOOLEAN, "NOUSE" FLOAT)

severe medical illness or mental problem or laboratory abnormality which can confound the results;
SELECT * FROM table_train_20 WHERE mental_status = 1
SELECT * FROM "table_train_20" WHERE "mental_status" = 1