Adoption and effectiveness of internal mammary artery grafting in coronary artery bypass surgery among Medicare beneficiaries

Interesting paper evaluating the usage of IMA for coronary artery bypass graft surgery in the USA from 1988 to 2008 among Medicare users. The study looks into the adoption of IMA grafting over this period of time and the variation in its use among different states which goes from less than 87.5% to over 95%. Differences in outcomes in those patients with and without an IMA graft were also analyzed.