Codes and Frequencies
For sample persons under age 6 who ever received at least four polio vaccinations, IMNPOLAGTP4 reports the time unit (months or years) for the age when the fourth polio vaccine was received. IMNPOLAGTP4 should be used in conjunction with IMNPOLAGN4, which reports the corresponding number of unit 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 two polio vaccinations.
- 1991 : SAMPWEIGHT