CREATE TABLE table_test_6 ("id" INT, "scr" INT, "anemia" BOOLEAN, "blood_hemoglobin" INT, "bleeding" INT, "hemorrhagic_diseases" BOOLEAN, "stroke" BOOLEAN, "blood_platelet_counts" INT, "trauma" BOOLEAN, "renal_disease" BOOLEAN, "hematocrit_hct" FLOAT, "hepatic_disease" BOOLEAN, "polyglobulia" BOOLEAN, "estimated_glomerular_filtration_rate_egfr" INT, "non_ischemic_stroke" BOOLEAN, "surgery" BOOLEAN, "NOUSE" FLOAT)

severe anemia
SELECT * FROM table_test_6 WHERE anemia = 1
SELECT * FROM "table_test_6" WHERE "anemia" = 1