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IID-25.1 Data Details

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IID-25.1 Reduce new hepatitis B infections in adults aged 19 and older

About the Data

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

Data Source: 
National Notifiable Diseases Surveillance System (NNDSS); Centers for Disease Control and Prevention, Center for Surveillance, Epidemiology, and Laboratory Services (CDC/CSELS)
Bridged-race Population Estimates; Centers for Disease Control and Prevention, National Center for Health Statistics and U.S. Census Bureau (CDC/NCHS and Census)
Changed Since the Healthy People 2020 Launch: 
Yes
Measure: 
per 100,000
Baseline (Year): 
2.0 (2007)
Target: 
1.5
Target-Setting Method: 
Maintain consistency with national programs, regulations, policies, and laws.
Target-Setting Method Justification: 
The target reflects anticipated large reductions based on 1) the high vaccination coverage among adolescents who will age into this cohort in the coming decade, 2) the long-term effectiveness of hepatitis B vaccination, and 3) national policies to increase vaccination coverage among adults at risk for hepatitis B.
Numerator: 

Number of symptomatic hepatitis B cases reported in the past 12 months among persons aged 19 years and over

Denominator: 

Total population of persons aged 19 years and over in reporting states

Comparable Healthy People 2010 Objective: 
Adapted from HP2010 objective
Data Collection Frequency: 
Annual
Methodology Notes: 

    Data are rates per 100,000 population based on the number of symptomatic cases of acute hepatitis B reported to NNDSS. A case definition for new symptomatic cases of hepatitis B is available from CDC.

    FOR SINGLE DATA YEARS: Case rates are calculated based on the resident population of the United States for the data year involved. For census years (e.g. 2010), population counts enumerated as of April 1 are used. For all other years, populations estimates as of July 1 are used. Postcensal population estimates are used in rate calculations for years after a census year and match the data year vintage (e.g. July 1, 2011 resident population estimates from Vintage 2011 are used as the denominator for 2011 rates). Postcensal population estimates are used in rate calculations for the years between censuses (e.g. 1991-1999, 2001-2009). Race-specific population estimates for 1991 and later use bridged-race categories.

Changes Between HP2010 and HP2020: 
This objective differs from Healthy People 2010 objectives 14-03a, 14-03b, and 14-03c, which tracked the rate of new hepatitis B infections in adults 19 to 24 years (14-03a), 25 to 39 years (14-03b) and 40 years and over (14-03c).

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 2014, Population Estimates was added as a data source to reflect measure's population denominator. The data and target were not revised. In 2015, the denominator data source name was revised from Population Estimates to Bridged-Race Population Estimates for Census 2000 and 2010. The numerator data source, baseline estimate, target, and target-setting method remain unchanged.

References

Additional resources about the objective

  1. CDC. Vaccination coverage among adolescents 13—17 years--- United States, 2007. MMWR 2008;57(40); 1100-1103
  2. Centers for Disease Control and Prevention (CDC). Case definitions for infectious conditions under public health surveillance.
  3. Daniels D, Grytdal S, Wasley A. Surveillance for acute viral hepatitis - United States, 2007. MMWR Surveillance Summary. May 22 2009;58(3):1-27.