Contraception: Basic comparison of typical effectiveness

Reproduced with permission from: Trussell J, Aiken ARA. Contraceptive efficacy. In: Contraceptive Technology, 21st ed, Hatcher RA, Trussell J, Nelson AL, et al (Eds), Ayer Company Publishers, Inc., New York 2018. p. 102. Copyright © 2018 Contraceptive Technology Communications, Inc.