CREATE TABLE table_test_18 ("id" INT, "bleeding" INT, "dialysis" BOOLEAN, "hct" INT, "hepatic_disease" BOOLEAN, "anaemia" BOOLEAN, "creatinine_clearance_cl" FLOAT, "polycytaemia" BOOLEAN, "thrombocytopenia" FLOAT, "kidney_disease" BOOLEAN, "body_mass_index_bmi" FLOAT, "glycosylated_hemoglobin" FLOAT, "NOUSE" FLOAT)

polycytaemia ( hct > 52 % ) at randomization
SELECT * FROM table_test_18 WHERE polycytaemia = 1 OR hct > 52
SELECT * FROM "table_test_18" WHERE "hct" > 52 OR "polycytaemia" = 1