Figure 1From: Accounting for the mortality benefit of drug-eluting stents in percutaneous coronary intervention: a comparison of methods in a retrospective cohort study Rates of percutaneous coronary intervention with drug-eluting and bare metal stents between 1998-2007, per 100,000 person-years. All stents prior to April 2003 were bare metal, and 88.3% of stents after April 2003 were drug-eluting.Back to article page