Multivariable predictors of postoperative venous thromboembolic events after general and vascular surgery: results from the patient safety in surgery study.

Background: Venous thromboembolism (VTE) is a potentially preventable postoperative complication. Accurate risk prediction is an essential first step toward limiting serious, and sometimes fatal, postoperative VTE. We sought to develop and test a model to predict patients at high risk for postoperative VTE.