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IMSPOL
Source of polio vaccine information
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Codes and Frequencies



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Description

For sample persons under age 6, IMSPOL reports the source of polio vaccine information.

Please use the IPUMS NHIS drop down menu and search functions for related variables.

Comparability

There are changes in the universe.

Universe

  • 1991-1993: Sample persons under age 6.
  • 1994-1996: Sample persons under age 6 and all persons 19-35 months.

Availability

  • 1991-1996

Weights