<qa>  What is the name of the effective method of birth control?- for women, practicing an effective method of birth control before entry and throughout the study or postmenopausal for at least one year, or surgically sterile; negative urine pregnancy test at each visit. Effective methods of birth control are those approved by the Food and Drug Administration FDA used as described in the FDA Birth Control Guide These methods are: 1 intrauterine device IUD copper; 2 IUD with progestin; 3 implantable rod; 4 contraceptive shotinjection; 5 oral contraceptives combined pill, progestin-only pill, or extendedcontinuous-use combined pill; 6 contraceptive patch; 7 vaginal contraceptive ring; 8 diaphragm with spermicide; 9 sponge with spermicide; 10 cervical cap with spermicide; 11 male condom; 12 female condom; 13 male partner with a vasectomy. Abstinence from sexual intercourse is also an effective method of birth control. 