 Contraceptive subdermal implant that meets the effectiveness criteria including a 1 rate of failure per year, as stated in the product label; Intrauterine device or intrauterine system that meets the effectiveness criteria including a 1 rate of failure per year, as stated in the product label; Oral contraceptive, either combined or progestogen alone; Injectable progestogen; Contraceptive vaginal ring; Percutaneous contraceptive patches; Male partner sterilization with documentation of azoospermia prior to the female subjects entry into the study, and this male is the sole partner for that subject; Male condom combined with a vaginal spermicide foam, gel, film, cream, or suppository. 