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Contraceptive Effectiveness

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The Handbook of Contraception

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Abstract

Contraceptive effectiveness describes how well a method works with typical use, whereas contraceptive efficacy describes how well a contraceptive method works with perfect use. Knowledge of both contraceptive effectiveness and efficacy is needed for contraceptive counseling since they are two of the most important factors that patients consider. This chapter reviews the methods with which contraceptive effectiveness and efficacy are determined as well as the limitations to these methods. Additionally, the best estimates of contraceptive effectiveness and efficacy for each contraceptive method are presented. Finally, this chapter offers general guidelines for contraceptive counseling.

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Awadalla, M. (2020). Contraceptive Effectiveness. In: Shoupe, D. (eds) The Handbook of Contraception. Current Clinical Practice. Humana, Cham. https://doi.org/10.1007/978-3-030-46391-5_1

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