Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Prevalence of human papillomavirus (HPV) types 16 or 18, HPV16 and HPV18 over time and p values for the crude trend test, among (a) all women; (b) heterosexual men; (c) unvaccinated women. Note: the p value presents the Cochran‐Armitage Trend Test. *Percentage of women and heterosexual men who reported to be vaccinated at least once. [Color figure can be viewed at wileyonlinelibrary.com]
