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Metadata: Indicator Instance

3 Months | CMS_US | 2013-14

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* Estimates for children born in 2017 are considered preliminary and will be finalized after the data for survey year 2020 are available.

Technical Notes (more information on vaccine abbreviations, dose definitions, and vaccine series)

• Technical Abbreviations: CI=confidence interval (95% confidence intervals); NA=not available (estimate not reported because data not collected or unweighted sample size for the denominator was <30 or (95%CI half width/estimate) > 0.588).

• HP 2020 target = Healthy People 2020 coverage levels established to reduce the burden of vaccine preventable diseases.

• Estimates with confidence intervals >20 may not be reliable.

Areas included in the NIS-Child varied by survey year. Data from U.S. Territories were not included in national estimates.

• Vaccination coverage estimates included only children with adequate provider-reported immunization records.

Survey age eligibility

• Vaccination coverage estimates are presented by birth year (birth cohort) rather than survey year. Because of the survey age eligibility range of 19 to 35 months, children born in three different calendar years appear in the data for each survey year. To estimate vaccination coverage among children born in a particular year, multiple survey years of data were combined and then stratified by birth year (birth cohort). Vaccination coverage by 24 months and by 35 months was estimated using Kaplan-Meier (time to event) analysis among children in the indicated birth year groups.

• Children were considered up to date for influenza vaccine if they received 2 or more doses at least 24 days apart by age 24 months. Therefore, the influenza vaccination coverage measure is not season-specific. Season-specific estimates are available on FluVaxView.

• Vaccination coverage milestones followed the Advisory Committee on Immunization Practices (ACIP) Immunization Schedule. HepB birth dose is administered from birth through 3 days.

• Coverage with Haemophilus influenzae type b vaccine (Hib) dropped sharply in 2009 due to a shortage of vaccine. The shortage also affected the 7-vaccine series coverage, which included Hib. In 2009, the way a child was determined to be fully vaccinated for Hib changed from having 3 or more doses of Hib to having either 3 or 4 doses, depending upon the product type received.

 

* Indicator instance level metadata

 

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