Fig 3 Subgroup analysis for risk of venous thrombosis associated with preoperative sepsis. Venous thrombosis includes deep venous thrombosis or pulmonary embolism that occurred intraoperatively or within 30 days after surgical procedure. Odds ratios adjusted for age, sex, diabetes, smoking status, treated arterial hypertension, renal failure, cancer, bleeding disorder or anticoagulation, general anaesthesia, and surgical subspecialty