Adjusted trends in the rate of percutaneous coronary intervention (PCI) for occlusions identified after myocardial infarction among selected subgroups following guideline revisions. The odds ratios presented here refer to the adjusted odds of receiving PCI for a persistent occlusion, per 30-day increase in time, during the specified time period. They reflect overall trends in the use of PCI for total occlusions during the period from December 2007 to December 2008. CHF indicates congestive heart failure; CI, confidence interval; HMO, health maintenance organization; OR, odds ratio; STEMI, ST elevation myocardial infarction.