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Several recent observational studies have addressed the trade-offs of using bare-metal stents (BMS) versus drug-eluting stents (DES) to treat coronary atherosclerosis (JW Cardiol Jun 4 2008). In this population-wide study of Medicare-eligible patients, investigators compared outcomes in 38,917 patients who received BMS from October 2002 through March 2003 with outcomes in 28,086 patients who received any stent from September through December 2003. In the latter group, 61.5% of the patients received DES (sirolimus-eluting only) and 38.5% received BMS.
Baseline characteristics of the two cohorts were similar, except for a slightly higher prevalence of diabetes in the DES era. After 2 years of follow-up, the rate of repeat revascularization was…