Abstract
This review provides an update of previous estimates of first-year probabilities of
contraceptive failure for all methods of contraception available in the United States.
Estimates are provided of probabilities of failure during typical use (which includes
both incorrect and inconsistent use) and during perfect use (correct and consistent
use). The difference between these two probabilities reveals the consequences of imperfect
use; it depends both on how unforgiving of imperfect use a method is and on how hard
it is to use that method perfectly. These revisions reflect new research on contraceptive
failure both during perfect use and during typical use.
Keywords
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Article info
Publication history
Accepted:
March 19,
2004
Received:
March 18,
2004
Identification
Copyright
© 2004 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
