Heart Attack

Heart Attack Hospitalizations

This display shows the number and rate of heart attack hospitalizations per 10,000 population. These data can tell us which counties have a higher number or rate of hospitalizations and if a rate is going up or down over time. To add a county to the trend chart, click a county on the map. To unselect a county, click the same county again.

Heart Attack Town Data

This map shows the number and rate of heart attack hospitalizations per 10,000 population.

Heart Attack Tables

Create a custom table of data about heart attack hospitalizations.

Measure Definitions

• Hospitalizations
  • Visits with a primary diagnosis of acute myocardial infarction (heart attack) are included in the analysis.
  • Data for 2015 are not shown because hospitalization diagnostic coding transitioned from the International Classification of Diseases, 9th Edition, Clinical Modification (ICD-9-CM) to the 10th Edition (ICD-10-CM) in October 2015. Caution is advised when comparing rates in years before 2015 to rates after 2016 due to the coding change.
  • Analyses are based on the year of admission to an emergency department or hospital.
  • Individuals admitted to an acute care hospital for a heart attack often require transfer to another facility for specialized medical care. To avoid counting the same individual twice, visits that occur due to a patient being transferred can be excluded. A transfer is defined as a patient who is discharged from an acute care hospital and admitted to another hospital within 24 hours with the same primary diagnosis (heart attack).

Data Limitations

• Hospitalizations
  • Approximate patient identifiers, using demographic and visit information, are created for analysis in order to exclude patient transfers. This de-duplication is not perfect, and some patients may still be counted twice.
  • Visits associated with Maine’s Veteran’s Affairs Hospital and the Indian Health Service are not included.
  • Due to the transition from ICD-9-CM coding practices to ICD-10-CM, 2015 data are not included.
  • Only Maine residents seen at Maine hospitals are included.

Additional Details

• In order to protect privacy as per the Maine CDC Privacy Policy, data may have been suppressed. For locations where data must be suppressed a range (e.g. 1-5) is provided for the number of events and an asterisk (*) for the rate. Data may be secondarily suppressed to prevent indirect identification and displayed as not reported (NR).
• Age-adjusted rates are considered unreliable and not reported (NR) when case counts are less than 25.
• Combined year population data are the sum of individual years (e.g., 2010-2014 is the sum of populations in 2010, 2011, 2012, 2013, and 2014). Combined year rates are annualized across all included years.