Copper T380 intrauterine device for emergency contraception: highly effective at any time in the menstrual cycle.

What Was Tested

This observational study looks at Copper (Supplement).

This was a secondary analysis of an observational study, and thus participants were not randomized to an alternative postcoital method.

There were a small number of women who had UPI >5 days after their predicted ovulation day thus limiting the confidence of assuring a low risk of pregnancy in this situation.

Who Took Part

The abstract describes 1840 participants taking part.

The age groups tagged for this paper are teenagers and adults, women only.

This is a secondary analysis of data obtained from a previously published prospective cohort study of women who received the Copper T380A IUD for EC between July 1997 and January 2000.

The researchers included 1840 participants according to the study inclusion criteria of a known last menstrual period (LMP) and cycle lengths of 25-35 days.

How the Study Was Run

Women with uncertain LMP dates were excluded.

This study included only participants with cycle lengths of 25-35 days.

What Was Measured

This was a secondary analysis of an observational study, and thus participants were not randomized to an alternative postcoital method.

Topics PubMed links to this paper include Contraception, Postcoital, Intrauterine Devices, Copper, Menstrual Cycle and Ovulation.

The authors tagged it with the keywords IUD and emergency contraception.

What This Means in Plain Language

This is an observational study of Copper (Supplement) in 1840 participants.

With several hundred people or more, it is a fairly large study for this kind of research.

Results are reported in around 3 sentences of the abstract; we leave them to the paper itself rather than summarise them.

The publication is from 2013 (Human reproduction (Oxford, England)), a journal based in England.

More context: the Copper (Supplement) compound page, all human trials.