Codes and Frequencies
For sample persons under age 6 who ever received at least four polio vaccinations, IMNPOLAGN4 reports the number of units for the age when the fourth polio vaccine was received. IMNPOLAGN4 should be used in conjunction with IMNPOLAGTP4, which reports the corresponding time unit (months or years) stated by the respondent.
Please use the IPUMS NHIS drop down menu and search functions for related variables.
- 1991: Sample persons under age 6 with no available shot record who ever received an immunization and ever received at least one polio vaccination.
- 1991 : SAMPWEIGHT