Percentage of Women with an Unintended Pregnancy During the First Year of Typical Use and the First Year of Perfect Use of Contraception *
Method Typical Use Perfect Use
Male sterilization 0.15 0.10
Female sterilization 0.5 0.5
IUD: Copper T 0.8 0.6
IUD: levonorgesterel-containing
intrauterine system 0.1 0.1
Depo-Provera 3 0.3
NuvaRing 8 0.3
Ortho-Evra patch 8 0.3
Combined pill and mini-pill 8 0.3
Male condom 15 2
Diaphragm 16 6
Withdrawal 27 4
Spermicides 29 18
No method 85 85

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