TABLE 3

Characteristics of Sexually Active Females Aged 14 to 24 Years, Overall and According to Vaccination History, NHANES 2003–2006 and 2009–2012

Variable% (95% CI)Prevalence Ratio (95% CI)
Prevaccine Era 2003–2006 (n = 1092)Vaccine Era 2009–2012 (n = 753a)Comparison of Vaccine Era With Prevaccine ErabComparison Within Vaccine Erac
≥3 lifetime sex partners
 Overall58.4 (54.9–61.7)67.7 (64.1–71.1)1.16 (1.07–1.25)NA
 VaccinatedNA64.9 (56.7–72.3)1.11 (0.98–1.27)0.93 (0.78–1.11)
 UnvaccinatedNA70.0 (63.9–75.4)1.20 (1.09–1.32)Ref
Non-Hispanic white subjects
 Overall64.0 (56.7–70.7)56.8 (49.1–64.2)0.89 (0.75–1.05)NA
 VaccinatedNA63.9 (54.0–72.8)1.00 (0.83–1.20)1.19 (1.01–1.40)
 UnvaccinatedNA53.7 (45.4–61.7)0.84 (0.70–1.01)Ref
  • NA, not applicable.

  • a A total of 287 sexually active females were vaccinated (defined as a history of receipt of ≥1 vaccine dose), and 439 were unvaccinated. Data for 27 sexually active females who had no information on vaccination status are included in the overall group.

  • b Overall, vaccinated, and unvaccinated in 2009–2012 compared with overall in 2003–2006.

  • c Vaccinated compared with unvaccinated in 2009–2012.