The choice of the method of contraception is a personal decision based on individual preferences for convenience and comfort, medical histories and the risks and benefits and side effects associated with each method. This calls for the personal involvement of the sexually active males and females to take the appropriate decisions keeping in mind the above stated factors. Further considerations become imperative when the contraception methods are implemented or long term. The issues like whether a couple intends to have children in future are of prime importance before opting for any specific method. Almost all the birth control methods are reversible. With the discontinued usage of the birth control technique men and women will be fertile to their normalcy and will still be able to reproduce. However in the case of surgical methods it becomes comparatively difficult to reverse the situation back to normalcy; which means that once the surgery is carried out, there are less chances for that male or female to reproduce.
It is generally believed that no birth control method is 100 percent effective in the prevention of pregnancy; however it is found that some methods are found more effective then the rest. The pregnancy rates for birth control methods are known as failure rates and are generally expressed in percentage that represents the number of pregnancies expected in a group of 100 fertile women using the sole method for a period of one year. Researchers use two basic types of pregnancy rates while describing the effectiveness of a birth control method. Method effectiveness, or perfect use, is the chance of becoming pregnant when a particular method is used correctly and consistently with each act of sexual intercourse.