Intrauterine contraception with Nova-T and copper-T-200 during three years

Contraception
K G NygrenT Luukkainen

Abstract

A randomized comparative trial on the clinical performance of two copper-releasing IUDs (Nova-T and Copper-T-200) was performed simultaneously in Denmark, Finland and Sweden. After three years the cumulative pregnancy rate was 1.9 for Nova-T and 5.0 for Copper-T. This difference in efficacy was statistically significant (p less than 0.001). Copper-T had a lower expulsion rate (p less than 0.05) in the total series but not in postmenstrual insertions. Differences between the two devices in other termination rates were not statistically significant. Analysis according to age and parity demonstrated that the pregnancy rate of Nova-T was lower than that of Copper-T in every age and parity group. The pregnancy rate of Nova-T was not effected by age or parity whereas the pregnancy rate and the expulsion rate of Copper-T decreased with increasing age and parity. The removal rate because of infection decreased markedly after the first year of use for both devices. The cumulative rate of removals for infection during the three years of use was not significantly correlated to age and there was no correlation to parity. The continuation rates increased with age and parity. The continuation rates of nulli- and primiparous women were almost...Continue Reading

References

Jun 1, 1977·American Journal of Obstetrics and Gynecology·S P AzenD R Mishell
Apr 1, 1980·Contraception·H AllonenT Pyörälä

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Citations

Mar 1, 1985·Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception·P E RhemrevC C de Nooyer
Jun 1, 1991·Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception·B J Struthers
Jun 1, 1992·Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception·J C Wilson
Mar 1, 1989·Advances in Contraception : the Official Journal of the Society for the Advancement of Contraception·J C Wilson
Sep 5, 1985·The New England Journal of Medicine
May 26, 1984·British Medical Journal·N Siddle
Nov 5, 2016·Contraception·Tara C JatlaouiKathryn M Curtis
Mar 29, 2019·International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics·Alka KriplaniChittaranjan N Purandare
Oct 19, 2007·The Cochrane Database of Systematic Reviews·R KulierC D'Arcangues

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