On this page: About the National Data | Methodology | History
About the National Data
Data
Data Sources: National Hospital Ambulatory Medical Care Survey (NHAMCS), CDC/NCHS; Population Estimates, Census
Baseline: 49.6 emergency department visits for asthma per 10,000 persons aged 5 years and over occurred in 2016-18
Target: 40.2 per 10,000
Methodology
Methodology notes
FOR MULTIPLE DATA YEARS: Emergency department visit rates are calculated based on sum of July 1 estimates of the civilian noninstitutionalized populations for each of the data years involved (e.g., the denominator of a rate for 2016-2018 combined is the sum of the population estimates for 2016, 2017, and 2018). The population estimates are from the Vintage matching the data year for the postcensal period based on the 2010 census (e.g., July 1, 2016 civilian noninstitutionalized population estimates from Vintage 2016). July 1, 2020 population estimates based on the 2010 census are used for 2020.
Age-adjustment notes
This Indicator uses Age-Adjustment Groups:
- Total: 5-17, 18-24, 25-44, 45-64, 65+
- Sex: 5-17, 18-24, 25-44, 45-64, 65+
- Race/Ethnicity: 5-17, 18-24, 25-44, 45-64, 65+
- Health Insurance Status: 5-17, 18-24, 25-44, 45-64
- Geographic Region: 5-17, 18-24, 25-44, 45-64, 65+
History
In 2022, the baseline was revised from 54.9 per 10,000 in 2013-15 to 49.6 per 10,000 in 2016-18 because NHAMCS completed the transition from ICD-9-CM to ICD-10-CM in 2016. The target was revised from 44.0 per 10,000 to 40.2 per 10,000 using the original target setting method.