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Related Experiment Videos

Two-year rates for Nova T and Copper T in a comparative study

H Allonen, T Luukkainen, N C Nielsen

    Contraception
    |April 1, 1980
    PubMed
    Summary

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    Nova T demonstrated a significantly lower pregnancy rate compared to Copper T 200 in a two-year study. This finding suggests Nova T may be an improved intrauterine device for contraception.

    Area of Science:

    • Reproductive Health
    • Medical Device Technology
    • Clinical Gynecology

    Background:

    • Intrauterine devices (IUDs) are widely used for long-term reversible contraception.
    • Copper T 200 is a established IUD, but newer models aim for improved efficacy.
    • Comparative studies are essential to evaluate the performance of novel contraceptive devices.

    Purpose of the Study:

    • To compare the efficacy and safety of the Nova T IUD versus the Copper T 200 IUD.
    • To assess pregnancy rates and termination rates over a two-year period.
    • To evaluate potential variations in performance across different countries and demographic groups.

    Main Methods:

    • A randomized comparative study involving Nova T and Copper T 200 IUDs.
    • Study conducted simultaneously in Denmark, Sweden, and Finland.
    Keywords:
    Acceptor CharacteristicsAge FactorsComparative StudiesContraceptionContraception ContinuationContraception TerminationContraceptive EffectivenessContraceptive MethodsDemographic FactorsDenmarkDeveloped CountriesEuropeFamily PlanningFertilityFertility MeasurementsFinlandInsertionIudIud, Copper ReleasingMenstrual CycleMenstruationNorthern EuropeParityPopulationPopulation CharacteristicsPopulation DynamicsPostabortionPostmenstruationPregnancyReproductionResearch MethodologyScandinaviaStudiesSwedenUse-effectiveness

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  • Follow-up period of two years post-insertion, collecting data on pregnancy and termination rates.

    • Main Results:

    • Nova T exhibited a significantly lower pregnancy rate than Copper T 200.
    • This reduced pregnancy rate with Nova T was consistent across all participating countries, age groups, and parity.
    • No significant difference was observed in other termination rates between the two IUDs.
    • Continuation rates at two years were comparable: 64.7% for Nova T and 65.5% for Copper T 200.

    Conclusions:

    • Nova T appears to be an improved copper-releasing intrauterine device.
    • The device shows superior performance in preventing pregnancy compared to Copper T 200.
    • Further research may explore long-term outcomes and user satisfaction.