title: Comparison of NIS and NHIS/NIPRCS vaccination coverage estimates. National Immunization Survey. National Health Interview Survey/National Immunization Provider Record Check Study.
abstract: BACKGROUND
  The National Immunization Survey (NIS) and the National Health Interview Survey (NHIS) produce national coverage estimates for children aged 19 months to 35 months. The NIS is a cost-effective, random-digit-dialing telephone survey that produces national and state-level vaccination coverage estimates. The National Immunization Provider Record Check Study (NIPRCS) is conducted in conjunction with the annual NHIS, which is a face-to-face household survey. As the NIS is a telephone survey, potential coverage bias exists as the survey excludes children living in nontelephone households.
  
  
  METHODS
  To assess the validity of estimates of vaccine coverage from the NIS, we compared 1995 and 1996 NIS national estimates with results from the NHIS/NIPRCS for the same years.
  
  
  RESULTS
  Both the NIS and the NHIS/NIPRCS produce similar results.
  
  
  CONCLUSIONS
  The NHIS/NIPRCS supports the findings of the NIS.
authors.affiliation: National Immunization Program (Bartlett, Stokley, Zhao), Centers for Disease Control and Prevention, Atlanta, Georgia, USA
authors.forename: D L
authors.initials: DL
authors.lastname: Bartlett
authors.forename: T M
authors.initials: TM
authors.lastname: Ezzati-Rice
authors.forename: S
authors.initials: S
authors.lastname: Stokley
authors.forename: Z
authors.initials: Z
authors.lastname: Zhao
mesh_terms: D002675:Child, Preschool; D019538:Health Care Surveys; D006801:Humans; D017589:Immunization Programs / Q000706:statistics & numerical data*; D007223:Infant; D009313:National Health Programs / Q000706:statistics & numerical data; D013689:Telephone; D014481:United States; D014611:Vaccination / Q000706:statistics & numerical data