TABLE 1. Contraceptive efficacy of barrier methods.

USA - 1986/1989

Pregnancy Rate (%)
Condoms
Spermicide
Diaphragm
(Rhythm/NFP)
(No method)
(Oral contraception)
(IUDs)
(Sterilization)

14 - 16
22 - 26
17 - 19
6 - 20
~ 40
4 - 6
1 - 4
0.1 - 0.5

* Retrospective studies 

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Edited by Aldo Campana,