National Data Source

National Hospital Ambulatory Medical Care Survey (NHAMCS); Centers for Disease Control and Prevention, National Center for Health Statistics (CDC/NCHS)

Population Estimates; U.S. Census Bureau (Census)

Population Estimates; U.S. Census Bureau (Census)

Changed Since the Healthy People 2020 Launch

Yes

Measure

per 10,000

Baseline (Year)

132.8 (2005-2007)

Target

95.7

Target-Setting Method

Minimal statistical significance

Numerator

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

Denominator

Number of children under age 5 years

Data Collection Frequency

Annual

Comparable Healthy People 2010 Objective

Retained from HP2010 objective

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.

Description of Changes Since the Healthy People 2020 Launch

The original baseline was revised from 132.7 to 132.8 due to a revised programming error. The target was adjusted from 95.5 to 95.6 to reflect the revised baseline using the original target-setting method. The target was revised a second time from 95.6 to 95.7 due to a change in the rounding rules for target calculations of Minimal Statistical Significance.