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Description
For sample persons under age 7, with available shot records, IMRPOLDA1 reports the number of polio vaccines on record.
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
1997: Sample children under age 7 and all children 19 to 35 months old in quarters 1 and 2 and 12 to 35 months old in quarters 3 and 4 with available shot records.
1998-2002: Sample children under age 7 and all children 12 to 35 months old with available shot records.
2003: Sample children under age 7 with available shot records.
