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RD-3.2 Data Details

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RD-3.2 Reduce emergency department (ED) visits for asthma among children and adults aged 5 to 64 years

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
National Hospital Ambulatory Medical Care Survey
Population Estimates
Changed Since the Healthy People 2020 Launch: 
per 10,000
Baseline (Year): 
57.0 (2005–07)
Target-Setting Method: 
Minimal statistical significance
Target-Setting Method Justification: 
The target is the smallest improvement that results in a statistically significant difference when tested against the baseline value, assuming the same standard error for the target as the baseline.

Number of visits to an emergency department with a first-listed diagnosis of asthma (ICD-9-CM code 493) among persons aged 5 to 64 years


Number of persons aged 5 to 64 years

Comparable Healthy People 2010 Objective: 
Retained from HP2010 objective
Data Collection Frequency: 
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 2005-2007 combined is the sum of the population estimates for 2005, 2006, and 2007). The population estimates are from the Vintage matching the data year for the postcensal period based on the 2000 census (e.g., July 1, 2005 civilian noninstitutionalized population estimates from Vintage 2005). July 1, 2010 population estimates based on the 2000 census are used for 2010.

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch: 
In 2011, the original baseline was revised from 56.4 to 57.0 asthma ED visits per 10,000 children and adults aged 5 to 64 years due to a revised programming error. The target was adjusted from 49.1 to 49.7 asthma ED visits per 10,000 to reflect the revised baseline using the original target-setting method. In 2013, the target was revised a second time from 49.7 to 49.6 asthma ED visits per 10,000 due to a change in the rounding rules for target calculations of Minimal Statistical Significance.