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Am J Prev Med. 2001 May;20(4 Suppl):25-7.

Comparison of NIS and NHIS/NIPRCS vaccination coverage estimates. National Immunization Survey. National Health Interview Survey/National Immunization Provider Record Check Study.

Author information

  • 1National Immunization Program (Bartlett, Stokley, Zhao), Centers for Disease Control and Prevention, Atlanta, Georgia, USA



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.


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.


Both the NIS and the NHIS/NIPRCS produce similar results.


The NHIS/NIPRCS supports the findings of the NIS.

[PubMed - indexed for MEDLINE]
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