- Record: found
- Abstract: not found
- Article: not found
Estimating the effectiveness of emergency contraceptive pills
James Trussell ,
Charlotte Ellertson ,
Helena von Hertzen ,
Allison Bigrigg ,
Anne Webb ,
Margaret Evans ,
Sue Ferden ,
Clare Leadbetter
April 2003
April 2003
There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
We use new estimates of conception probabilities by cycle day of intercourse, where
cycle day is measured with day 1 being the first day of bleeding in a cycle, to propose
a new approach for estimating the effectiveness of emergency contraceptive pills (ECPs).
We use this new approach to examine the absolute effectiveness and the cost-effectiveness
of ECPs and whether ECPs are more effective the sooner after unprotected intercourse
they are initiated.