Table 4.

Adjusted Vaccine Effectiveness (aVE) Against Human Papillomavirus (HPV) Infection in 1454 Study Participants Who Were Vaccinated Before Sexual Debut

Variable	HPV Positive, No. (%)	Multivariate Analysisa
		aOR (95% CI)	aVE, % (95% CI)	P
HPV16/18
Unvaccinated	10 (2.2)	1 (reference)
Vaccinated	1 (0.1)	0.06 (.01–.55)	93.9 (44.8–99.3)	.01
HPV31/45/52
Unvaccinated	21 (4.6)	1 (reference)
Vaccinated	13 (1.3)	0.32 (.14–.75)	67.7 (24.9–86.1)	.01

Abbreviations: aOR, adjusted odds ratio; CI, confidence interval.

^aAdjusted for number of sex partners and fiscal year of birth.