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Am J Cardiol. 2012 Jun 1;109(11):1589-93. doi: 10.1016/j.amjcard.2012.01.381. Epub 2012 Mar 20.

Recent trends in hospitalization for acute myocardial infarction.

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Kaiser Permanente, West Los Angeles Medical Center, Los Angeles, California, USA.


Rates of acute myocardial infarction (AMI) hospitalizations for elderly Medicare patients decreased during the previous decade. However, trends in population rates of AMI hospitalizations for all adults by subgroups have not been described. Using data from a large all-payer administrative database of hospitalizations, we calculated annual AMI hospitalization rates from 2001 through 2007. Trend analysis was performed across age, gender, and ethnicity categories using survey regression. Overall rate decreased from 314 to 222 AMI hospitalizations per 100,000 patients from 2001 through 2007, representing a 29.2% decrease. Significant decreases were observed in AMI hospitalization rate for each group by age categories (p <0.001) and by gender (p <0.001). When stratified by ethnicity and gender, age-adjusted AMI hospitalization rates in white men and women decreased by 30.8% and 31.4%, whereas black men and women had significantly slower rates of decrease of 13.6% and 12.6%, respectively. In conclusion, although the overall rate of AMI hospitalizations decreased from 2001 through 2007, the observed decrease was smaller for black patients compared to white patients across all age groups studied.

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