What is the effectiveness rate of the vaginal ring?

The vaginal ring is a highly effective form of contraception, with an effectiveness rate of approximately 99% when used correctly. This means that out of 100 women using the vaginal ring for one year, less than one will become pregnant. The effectiveness of the vaginal ring is attributed to its continuous release of hormones, which prevents ovulation, thickens cervical mucus, and thins the uterine lining, making it difficult for sperm to reach an egg.

The other effectiveness rates listed, though they may seem plausible, do not accurately reflect the high reliability of this method when used as directed. An effectiveness rate of 85% suggests a higher failure rate than what studies show for the vaginal ring, while 95% is closer but still less than the established effectiveness rate. A 100% effectiveness rate implies no chance of pregnancy, which is not realistic for any contraceptive method. Therefore, recognizing the vaginal ring's effectiveness at about 99% highlights its reliability as a birth control option.