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IMRPOLDA4

Record date of fourth polio vaccine: Day
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Codes and Frequencies

Display

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Description

For sample persons under age 6, and all children 19 to 35 months old, with any information transcribed from a shot record and with at least four polio vaccinations on record, IMRPOLDA4 reports the date of fourth polio vaccine.

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

Comparability

Apart from changes in the universe, this variable is mostly comparable over time.

Universe

  • 1991-1993: Sample persons under age 6, with any information transcribed from a shot record and at least four polio vaccinations on record.
  • 1994-1996: Sample persons under age 6, and all children 19 to 35 months old, with any information transcribed from a shot record and at least four polio vaccinations on record.

Availability

  • 1991-1996

Weights