 For example, female sterilization was used among 55% of women who had not completed high school compared with 16% of women who had graduated from college.Because national surveys of contraceptive methods have generally relied on the input of women, information about male sterilization is not as widespread.A survey using data from the 2002 National Survey of Family Growth found similar trends to those reported for female sterilization by the Centers for Disease Control and Prevention in 2006–2008.