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Oregon EPHT: Heart Attack Indicator

EPHT Heart Attack Indicator: Heart Attack Hospitalizations    

To see explanations, tables, graphs and maps for each measure, click on the measure name below.

Or, view the full EPHT report on  Asthma and Heart Attack Hospitalizations (pdf).


Information about Indicators:  Indicators provide information about a population’s health status  with respect to environmental factors when clear measurable links are not available. As part of the nationwide EPHT network implementation, work groups developed indicators and measures. Guidelines were established for the collection of data and the calculation of measures in a nationally-consistent way (called Nationally Consistent Data and Measures, or NCDMs).

Before EPHT,  there was no single heart attack surveillance system in place in the US. Mortality was currently the sole descriptor for national data for heart attacks. Estimates of incidence and prevalence of heart attacks and coronary heart disease were largely based on survey samples or large cohort studies. 

Tracking heart attack hospitalizations will provide more information than death certificates or surveys, and will help with examination of time and geographic trends in heart attack hospitalizations, and evaluation of differences by age, gender and race/ethnicity. 

For more information about environmental health indicators from the CDC:

Calculations:   The heart attack hospitalization measures calculated by EPHT are counts and rates for the years 2000 to 2006. Counts include the monthly (average, maximum, minimum) and annual number of hospitalizations, by state and county. Annual crude, age-specific and age-adjusted hospitalization rates are shown by state and county.

Data sources:  Data used in the calculation of these measures were collected by the Oregon Association of Hospitals and Health Systems for the Hospital Discharge Index (HDI). The HDI provides a central database of all Oregon hospital discharges for public health surveillance and hospital policy analysis. Information on emergency room visits, urgent care, outpatient surgery and clinic visits is not included in this database.

Only hospital admissions with a primary diagnosis of acute myocardial infarction (ICD-9 Code 410) are included in the calculation of these measures. Rates are calculated using U.S. Census Bureau annual population estimates; age adjustments are based on the standard U.S. population using 2000 census numbers.

Transfers from one hospital to another that occurred on the same day or the day following the initial admission for a particular heath event have been excluded from the calculation of these measures. Duplicate records have also been excluded.

Confidentiality is protected through the application of the confidentiality guidelines from the Center for Health Statistics in the Oregon Department of Human Services. These guidelines allow for the release of all the statistics on these pages.

For more information about this data, please contact the Oregon Health Authority Public Health Division, Center for Prevention and Health Promotion: