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Two years' experience with two levonorgestrel-releasing intrauterine devices and one copper-releasing intrauterine device: a randomized comparative performance study.
Fertil Steril. 1983 Feb; 39(2):187-92.FS

Abstract

A randomized comparative performance study of two levonorgestrel intrauterine devices (IUDs) and a copper (Nova-T) IUD (Leiras, Turku, Finland) was performed at two clinics in Finland and one in Brazil. The 24-month cumulative event rates per 100 women are reported. Six thousand woman-months of use were recorded with the levonorgestrel IUD and 3000 with the Nova-T device. Pregnancy rates at 2 years of use were 0.6 and 0 with the two levonorgestrel IUDs and 3.3 with the Nova-T IUD. Removal rates because of bleeding and/or pain were low with all three IUDs: 7.5, 7.6, and 7.1, respectively, at 24 months. Recordings of the number of days of bleeding showed significantly fewer days of bleeding during use of the levonorgestrel IUDs than the Nova-T IUD from the second month of use onward, until the end of the second year. No infections were recorded in association with use of the levonorgestrel IUDs, and only one termination because of infection was recorded for the Nova-T IUD. The continuation rates of use at 24 months were 66.6, 60.7, and 71.9 for the two levonorgestrel IUDs and the Nova-T IUD, respectively; the differences were not statistically significant.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

6401636

Citation

Nilsson, C G., et al. "Two Years' Experience With Two Levonorgestrel-releasing Intrauterine Devices and One Copper-releasing Intrauterine Device: a Randomized Comparative Performance Study." Fertility and Sterility, vol. 39, no. 2, 1983, pp. 187-92.
Nilsson CG, Allonen H, Diaz J, et al. Two years' experience with two levonorgestrel-releasing intrauterine devices and one copper-releasing intrauterine device: a randomized comparative performance study. Fertil Steril. 1983;39(2):187-92.
Nilsson, C. G., Allonen, H., Diaz, J., & Luukkainen, T. (1983). Two years' experience with two levonorgestrel-releasing intrauterine devices and one copper-releasing intrauterine device: a randomized comparative performance study. Fertility and Sterility, 39(2), 187-92.
Nilsson CG, et al. Two Years' Experience With Two Levonorgestrel-releasing Intrauterine Devices and One Copper-releasing Intrauterine Device: a Randomized Comparative Performance Study. Fertil Steril. 1983;39(2):187-92. PubMed PMID: 6401636.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Two years' experience with two levonorgestrel-releasing intrauterine devices and one copper-releasing intrauterine device: a randomized comparative performance study. AU - Nilsson,C G, AU - Allonen,H, AU - Diaz,J, AU - Luukkainen,T, PY - 1983/2/1/pubmed PY - 1983/2/1/medline PY - 1983/2/1/entrez KW - Age Distribution KW - Amenorrhea KW - Bleeding KW - Brazil KW - Comparative Studies KW - Contraception KW - Contraception Termination KW - Contraceptive Agents KW - Contraceptive Agents, Female KW - Contraceptive Agents, Progestin KW - Contraceptive Effectiveness KW - Contraceptive Methods KW - Copper KW - Examinations And Diagnoses KW - Family Planning KW - Finland KW - Infections KW - Ingredients And Chemicals KW - Inorganic Chemicals KW - Insertion KW - Iud KW - Iud Material KW - Iud, Hormone Releasing KW - Levonorgestrel KW - Metals KW - Parity KW - Pregnancy KW - Pregnancy Rate KW - Pregnancy, Unplanned KW - Reproduction KW - Reproductive Control Agents KW - Research Methodology KW - Retention KW - Size KW - Studies KW - Use-effectiveness SP - 187 EP - 92 JF - Fertility and sterility JO - Fertil Steril VL - 39 IS - 2 N2 - A randomized comparative performance study of two levonorgestrel intrauterine devices (IUDs) and a copper (Nova-T) IUD (Leiras, Turku, Finland) was performed at two clinics in Finland and one in Brazil. The 24-month cumulative event rates per 100 women are reported. Six thousand woman-months of use were recorded with the levonorgestrel IUD and 3000 with the Nova-T device. Pregnancy rates at 2 years of use were 0.6 and 0 with the two levonorgestrel IUDs and 3.3 with the Nova-T IUD. Removal rates because of bleeding and/or pain were low with all three IUDs: 7.5, 7.6, and 7.1, respectively, at 24 months. Recordings of the number of days of bleeding showed significantly fewer days of bleeding during use of the levonorgestrel IUDs than the Nova-T IUD from the second month of use onward, until the end of the second year. No infections were recorded in association with use of the levonorgestrel IUDs, and only one termination because of infection was recorded for the Nova-T IUD. The continuation rates of use at 24 months were 66.6, 60.7, and 71.9 for the two levonorgestrel IUDs and the Nova-T IUD, respectively; the differences were not statistically significant. SN - 0015-0282 UR - https://www.unboundmedicine.com/medline/citation/6401636/Two_years'_experience_with_two_levonorgestrel_releasing_intrauterine_devices_and_one_copper_releasing_intrauterine_device:_a_randomized_comparative_performance_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0015-0282(16)46817-2 DB - PRIME DP - Unbound Medicine ER -