Codes and Frequencies
For sample adults aged 18-64 years who received an HPV shot (HPVACHAD), AHPV1STAGE reports the age at which the respondent received his or her first HPV shot. Beginning in 2019, those who reported they received their first HPV shot under age 9 were coded to 96, "Under 9 years old," for confidentiality reasons because the recommended age to receive the first dose is 9 years old.
This variable was first introduced in the 2013 Adult Cancer Screening Supplement.
Please use the IPUMS NHIS drop down menu and search functions for other related variables.
The NHIS questionnaire was substantially redesigned in 2019 to introduce a different data collection structure and new content. For more information on changes in terminology, universes, and data collection methods beginning in 2019, please see the user note.
- 2013-2018: Sample adults aged 18-64 years who received an HPV shot.
- 2019: Sample adults aged 18-64 years who received an HPV shot (HPVACHAD).
- 2013-2019 : SAMPWEIGHT