Effectiveness of long-acting reversible contraception.

  title={Effectiveness of long-acting reversible contraception.},
  author={Brooke Winner and Jeffrey F. Peipert and Qiuhong Zhao and Christina M Buckel and Tessa Madden and Jenifer E. Allsworth and Gina M. Secura},
  journal={The New England journal of medicine},
  volume={366 21},
BACKGROUND The rate of unintended pregnancy in the United States is much higher than in other developed nations. Approximately half of unintended pregnancies are due to contraceptive failure, largely owing to inconsistent or incorrect use. METHODS We designed a large prospective cohort study to promote the use of long-acting reversible contraceptive methods as a means of reducing unintended pregnancies in our region. Participants were provided with reversible contraception of their choice at… 

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