BLOOMINGTON, Ind.--(BUSINESS WIRE)--Cook Medical today applauded a new study that appeared in this week’s issue of the New England Journal of Medicine. The matched cohort observational study compared the survival and complication rates of abdominal aortic aneurysm (AAA) Medicare patients treated with endovascular aneurysm repair (EVAR), as opposed to the more traditional, open surgical method. The four-year, 23,000-patient study, conducted by vascular surgeons at Beth Israel Deaconess Medical Center and Harvard Medical School, found that the short-term rates of death and complication were significantly lower with EVAR: 1.2 percent compared to 4.8 percent for patients who underwent open surgery.