DefinitionAn acute myocardial infarction (heart attack) hospitalization is an admission to the hospital of a New Mexico resident that occurs in-state during a specified time period (such as a year) for AMI as the primary (first-listed) diagnosis. Measures include 1) the number of in-state hospitalizations for AMI; 2) the number of hospitalizations for AMI including Texas hospitalizations; 3) crude rate of in-state hospitalization for AMI among persons 35 and over per 10,000 population; 4) crude rate of hospitalization for AMI among persons 35 and over per 10,000 population including Texas hospitalizations; 5) age-specific rate of in-state hospitalization for AMI per 10,000 population; 6) age-specific rate of hospitalization for AMI per 10,000 population including Texas hospitalizations; 7) age-adjusted rate of in-state hospitalization for AMI among persons 35 and over per 10,000 population (adjusted by the direct method to the 2000 US standard population); 8) age-adjusted rate of hospitalization for AMI among persons 35 and over per 10,000 population including Texas hospitalizations (adjusted by the direct method to the 2000 US standard population).
NumeratorNumber of hospital admissions where acute myocardial infarction is the primary diagnosis.
DenominatorNew Mexico resident population.
Data Interpretation IssuesThese data include inpatient hospitalizations of individuals who are discharged from non-federal hospitals (using their admission date). Therefore, these data do not include hospitalizations from Veterans Affairs or Indian Health Service hospitals.
These data are based only on primary discharge diagnosis codes. Race and ethnicity are not reported in the dataset due to issues with the quality of the data collection process at individual hospitals. The HPC does NOT collect hospitalizations among New Mexico residents that occur out of state. However, beginning in 2006, Texas admissions for acute myocardial infarction were obtained from the Texas Health Care Information Collection Center for Health Statistics.
Using an indicator of all AMI hospitalizations will include some transfers between hospitals for the same individual for the same AMI event. Variations in the number of transfers or readmissions for the same AMI event may vary by geographic area and affect rates.
Why Is This Important?No single AMI surveillance system is in place in the United States, nor does such a system exist for coronary heart disease (CHD) in general. Mortality is the sole descriptor for national data for AMI. Estimates of incidence and prevalence of AMI and CHD are largely based on survey samples (e.g., NHANES) or large cohort studies such as the Atherosclerosis Risk in Communities (ARIC) study.
In 2007, the American Heart Association estimated 565,000 new attacks and 300,000 recurrent attacks of MI annually (National Heart, Lung, and Blood Institute: based on unpublished data from the ARIC study and the Cardiovascular Health Study [CHS]). Among Americans aged >20 years, new and recurrent MI prevalence for both men and women represented 3.7% of the U.S. population, or 7,900,000 (4.9 million men and 3.0 million women). Corresponding prevalence by race and ethnicity is 5.4% for white men, 2.5% for white women, 3.9% for black men, and 3.3% for black women.
Other ObjectivesCDC Environmental Public Health Tracking, Nationally Consistent Data and Measures (EPHT NCDM)