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A randomized comparative study of three IUDs: Nova-T, MLCu375 and MLAgCu250 in New Zealand: 1-year results

Advances in Contraception volume 5, pages 23–30 (1989)Cite this article

Abstract

A randomized comparative study was made in New Zealand of three models of copper IUDs, the Nova-T, MLCu375 and MLAgCu250, with interval acceptors. At 1 year, the Multiloads (MLs) had lower net termination rates for accidental pregnancy, expulsion, pain/bleeding, other medical removals and infections (use-related terminations) than the Nova-T. These rates were significantly lower for the MLAgCu250 than the Nova-T for accidental pregnancy, expulsion and infection. The MLCu375 had significantly fewer removals for pain/bleeding and for other medical removals than the Nova-T. The MLAgCu250 had a significantly lower accidental pregnancy rate than the MLCu375. The Multiloads had significantly higher relevant use-related continuation rates than the Nova-T.

Resumé

On a effectué en Nouvelle-Zélande une étude comparative randomisée sur trois modèles de DIU au cuivre-le Nova-T, le MLCu375 et le MLAgCu250 avec, par intervalles, des sujets accepteurs. Au bout d'un an, on avait enregistré avec les dispositifs Multiload des pourcentages nets d'interruption moins élevés qu'avec le Nova-T, interruptions occasionnées par des grossesses accidentelles, des expulsions, des douleurs ou saignements, et par d'autres raisons d'ordre médical ou infectieux (interruptions liées à leur utilisation). Ces pourcentages étaient significativement plus faibles pour ce qui concerne les grossesses accidentelles, expulsion et infection avec le port du MLAgCu250 que dans le cas du Nova-T. Pour ce qui est du MLCu375, les retraits à la suite de douleurs/saignements et pour d'autres raisons médicales étaient significativement moins nombreux que dans le cas du Nova-T. Le MLAgCu250 a produit un pourcentage de grossesses accidentelles significativement plus faible que le MLCu375. Les dispositifs Multiload ont entraîné des pourcentages de continuation correspondants d'utilisation plus élevés que le dispositif Nova-T.

Resumen

Se realizó en Nueva Zelanda un estudio comparativo al azar de tres modelos de DIU de cobre: el Nova-T, el MLCu375 y el MLAgCu250, con sujetos aceptadores a intervalos. Al cabo de un año, se habían registrado con los dispositivos Multiload porcentajes netos de interrupción menos elevados que con el Nova-T para casos de interrupción ocasionados por embarazo accidental, expulsión, dolores/pérdidas de sangre, o bien por otras razones médicas o de infección (interrupciones relacionadas con su utilización). Estos porcentajes eran significativamente inferiores con el MLAgCu250 que con el Nova-T en los casos de embarazo accidental, expulsión e infección. Con el MLCu375, hubo menos casos en los que fue necesario retirar el dispositivo debido a dolores/pérdidas de sangre y otras razones médicas, que con el Nova-T. El MLAgCu250 produjo un porcentaje de embarazos accidentales significativamente inferior al del MLCu375. Los dispositivos Multiload registraron porcentajes de continuación correspondientes a utilización más elevados que el dispositivo Nova-T.

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Affiliations

  1. VObstetrician and Gynaecologist, St Helens Hospital, Auckland, New Zealand

    J. C. Wilson

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  1. J. C. Wilson
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Wilson, J.C. A randomized comparative study of three IUDs: Nova-T, MLCu375 and MLAgCu250 in New Zealand: 1-year results. Adv Contracept 5, 23–30 (1989). https://doi.org/10.1007/BF02340130

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  • DOI: https://doi.org/10.1007/BF02340130

Keywords

  • Public Health
  • Copper
  • Pregnancy Rate
  • Termination Rate
  • Continuation Rate