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.
Probability of an unaware AEP during one year of using each contraceptive method. Here ‘Other Method’ includes contraceptive patch, diaphragm, and spermicide; less than 0.8% of women of childbearing age use these contraceptive methods (Table S3).
