Hormonal contraceptives including oral contraceptives, hormone birth control patch (Ortho Evra), vaginal contraceptive ring (NuvaRing), injectable contraceptives (Depo-Provera, Lunelle), or hormone implant (Norplant System) Intrauterine devices Double barrier method Vasectomy of partner (shown successful as per appropriate follow-up) Tubal ligation Non-heterosexual lifestyle (same sex partner)