“…The thrombi detected were largely asymptomatic, an important point to consider when reviewing the independent risk factors found in this study as, in risk studies previously described, 9 clinically apparent VTE frequently was the vari- able analyzed. A relationship between venographically detected deep vein thrombosis and symptomatic VTE has been shown in surgical patients, 10,11 but there is a paucity of data in medical patients. The risk of VTE was highest among patients who had previously experienced a thromboembolic event and was independently associated with confirmed VTE (OR, 2.06; 95% CI, 1.10-3.69).…”