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Emergency contraception: clinical outcomes.

Anna Glasier1

  • 1University of Edinburgh and London School of Hygiene and Tropical Medicine, Edinburgh, UK. Anna.Glasier@ed.ac.uk

Contraception
|October 9, 2012
PubMed
Summary
This summary is machine-generated.

Emergency contraception (EC) methods like levonorgestrel (LNG-EC), ulipristal acetate (UPA), and IUDs are safe and effective. Despite increased use, EC has not reduced unintended pregnancy rates, highlighting the need for accessible ongoing contraception.

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Area of Science:

  • Reproductive Health
  • Pharmacology
  • Public Health

Background:

  • Emergency contraception (EC) is crucial for preventing unintended pregnancies.
  • Widely used methods include levonorgestrel (LNG-EC), ulipristal acetate (UPA), and copper intrauterine devices (IUDs).

Purpose of the Study:

  • To review the safety and efficacy of common EC methods.
  • To assess the public health impact of increased EC accessibility on unintended pregnancy rates and sexual behavior.

Main Methods:

  • Systematic review of safety and efficacy data for LNG-EC, UPA, and copper IUDs.
  • Analysis of studies on sexual behavior and contraception use following improved EC access.

Main Results:

  • All reviewed EC methods are safe with minimal side effects; ectopic pregnancy risks are unfounded.
  • LNG-EC prevents ~50% of expected pregnancies, UPA ~66%, and IUDs >95%.
  • Increased EC accessibility has not reduced unintended pregnancy rates, but has not negatively impacted sexual behavior or use of other contraceptives.

Conclusions:

  • Emergency contraception methods are safe and effective, with IUDs being the most effective.
  • Improved EC access alone has not yielded public health benefits in reducing unintended pregnancies.
  • Integrating EC access with easily available ongoing contraception is essential to maximize public health impact.