Table 1. Human Papillomavirus Vaccine (HPV) Receipt Among Adolescents By Sex/Age Group and Human Papillomavirus Vaccine Vaccination Status of Older Sisters

	Adolescents (unweighted n)	HPV Doses Received (weighted n, %)
	Adolescents (unweighted n)	0	1 or 2	3
Females aged 9–12 years^*
No older sister	345	79	16	5
Older sister(s), no HPV doses	104	93	7	0
Older sister(s), any HPV doses	93	54	29	17
Females aged 13–17 years^*^{^†}
No older sister	467	52	21	27
Older sister(s), no HPV doses	121	81	12	7
Older sister(s), any HPV doses	118	21	27	52
Males aged 9–12 years^*
No older sister	377	76	20	4
Older sister(s), no HPV doses	115	98	2	0
Older sister(s), any HPV doses	108	75	18	7
Males aged 13–17 years^*^{^†}
No older sister	454	74	20	6
Older sister(s), no HPV doses	93	91	5	4
Older sister(s), any HPV doses	116	59	25	16

↵* P < .001, comparison of 0 vs ≥1 dose.
↵† P < .001, comparison of 0 vs 1 or 2 vs 3 doses.