Codes and Frequencies
For sample adults ages 18-64, HPVACHAD indicates whether they ever received the HPV vaccine, and, for negative responses prior to 2019, identifies those who volunteered the information that their doctor refused to approve vaccination when asked. Those who answered "Yes" were asked how many HPV shots they had received (HPVACNO). Please see the Universe tab for changes to the universe prior to 2011.
The CDC's recommendations for HPV vaccination have changed over time.
The CDC first recommended the HPV vaccine for girls in 2006. According to the CDC website on HPV, "The HPV vaccine is routinely recommended for 11 and 12 year-old girls. The vaccine series can be started at 9 years of age. Catch-up vaccination is recommended for 13 through 26 year-old females who have not yet received the vaccine series."
In October 2009, the FDA approved the vaccine Gardasil for use by males. In February 2012, the CDC formally recommended the use of the vaccine by males.
As of 2012, the CDC recommends the following on their website:
HPV vaccine is recommended for all teen boys and men through age 21, who did not get all three doses of the vaccine when they were younger. The vaccine is also recommended for gay and bisexual men (or any man who has sex with men) and men with compromised immune systems (including HIV) through age 26, if they did not get fully vaccinated when they were younger. All men may get the vaccine through age 26....
The HPV vaccine is administered in 3 intra-muscular injections given over 6 months.
Persons who did not respond affirmatively to HPVACHAD were asked a series of questions about their interest in the vaccine and the barriers (such as cost) to vaccination.
Specifically, these questions (and their associated IPUMS NHIS questions) are:
- Ever heard about HPV vaccine (HPVACHEAR) (2008 children and adults; 2009 adults only)
- Interested in HPV vaccine (HPVACINT) (2008 adults only)
- Would get HPV shot if recommended (HPVACGETREC) (2008 children only)
- Main reason would not receive HPV vaccine (HPVACNOWHY) (2008 children and adults)
- Would get HPV vaccine if cost 350 to 500 dollars (HPVACGET500) (2008 children and adults)
- Would SC get HPV vaccine if it were free/at a lower cost (HPVACGETFRE) (2008 children and adults)
For a full list of HPV-related variables and information, including definitions, see (HPVHEAR).
Comparability is affected by changes to the universe and the 2019 questionnaire redesign.
For 2008 and 2009, HPVACHAD is only available for some sample females. Beginning in 2010, the variable is available for both sample females and sample males.
Additionally, sample children have moved in and out of the universe for HPVACHAD over time.
Finally, 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.
- 2008: Female sample adults age 18-64 and female sample children age 8-17.
- 2009: Female sample adults age 18-64.
- 2010: Sample adults age 18-64 and sample children age 8-17.
- 2011-2018: Sample adults age 18-64.
- 2019: Sample adults age 18-64.
- 2008-2019 : SAMPWEIGHT