Interesting contraception information
The seven most effective methods of contraception over one year”s use (Hatcher, Robert A. 2005. Contraceptive Technology (18th rev. ed). New York: Ardent Media, Inc)
Abstinence (perfect users) 100%, Intra-uterine device-hormonal (perfect users) 99.9 %, Implant (such as Implanon) 99.96%, Male Vasectomy 99.9%, Female Tubal Ligation 99.5%, Copper Intra-Uterine device 99.4%, Shot such as Depo Provera 99.7%
Least safe behaviors (risk of death in one year) starting with the least safe behavior: motorcycling (1 in 1,000), smoking and taking birth control pills less than 35 years old (1 in 5,000), driving a car (1 in 6,000), giving birth (1, in 10,000), tubal ligation (1 in 39,000), non-smoker less than 35 years old taking birth control pills (1 in 200,000), vasectomy (1 in 1,000,000)