Figure 1b .

Estimated quadrivalent HPV vaccination uptake among girls aged 11–17 years, by age group and number of doses National Health Interview Survey, United States, 2008

^aNumber of doses received is unknown for 12 girls (aged 11–17 years) with reported vaccine initiation; therefore it was included only in the >= 1 dose category.

^bIncludes 4 reports of 4 vaccine doses received and 1 report of 5 doses received.

Percentages are weighted to the population of girls aged 11–17 years.

Missing data and refused to answer or don’t know are included in the analysis.

Error bars are 95% CI around the estimated percentage.

Uptake of doses 2 and 3 for girls aged 9–10 years not reported due to small unweighted sample sizes.