Inclusion Criteria:  confirmed SLE completed data  Exclusion Criteria:  doubtful diagnosis of SLE those with missing data those with medications other than prednisolone, HCQ and anticoagulants those with multifetal pregnancies those patients with confirmed other medical diseases including diabetes mellitus, hypertension, thyroid disorders, anti-phospholipid antibody syndrome (APAS), cardiac disease those with confirmed deep vein thrombosis (DVT) or pulmonary embolism (PE) those with associated hematological diseases including SLE-associated thrombocytopenia.