What is the effectiveness rate of spermicides in preventing pregnancy?

The effectiveness rate of spermicides in preventing pregnancy is typically around 72-82% with typical use. This means that out of 100 women using spermicides as their only method of contraception over the course of a year, approximately 72 to 82 would avoid an unintended pregnancy. It's important to note that this effectiveness can be influenced by factors such as the correct application of the spermicide, the timing of use relative to sexual intercourse, and whether it is used in conjunction with other contraceptive methods for enhanced effectiveness.

The rates of effectiveness decrease when considering typical use compared to perfect use; therefore, understanding these nuances is essential for those considering using spermicides as a form of birth control. The other effectiveness ranges mentioned do not align with the established data on spermicides and could lead to misconceptions about their reliability.