Table 3. COMPLICATIONS

* Number of patients eligible for complication: vena caval filters inserted before or during surgery in 16/64 patients with venous stasis disease, leaving 48 at risk, and 45/1,915 without venous stasis disease, leaving 1,870 at risk for fatal pulmonary embolism; 4/64 operative deaths (+ 1 death after revision gastric bypass), leaving 60 patients with and 16/1,915 patients without venous stasis disease, leaving 1,899 at risk for late complications.

**P < .05 comparing patients with vs. without venous stasis disease.

***P < .01 comparing patients with vs. without venous stasis disease.

† Only 1 patient required laparotomy for lysis of adhesions.