title: A comparative study of the nylon T and copper T 200.
abstract: The nylon T IUD is identical to the copper T 200 except for the composition of nylon/copper.  A study conducted at the Family Planning Institute in Ljubljana, Yugoslavia compared the nylon T with the copper T.  Devices were randomly administered to women who had not been pregnant during the month prior to insertion.  The pregnancy rate for the nylon T group was 13.0 at 12 months, significantly higher (Por= 0.01) than the rate of 0.0 for the copper T group.  Effectiveness of copper devices is related to the copper itself, rather than being an effect of the increased surface area alone.
authors.forename: L
authors.initials: L
authors.lastname: Andolsek
authors.forename: M
authors.initials: M
authors.lastname: Kozuh-novak
authors.forename: C
authors.initials: C
authors.lastname: Waszak
mesh_terms: D001723:Birth Rate; D055598:Chemical Phenomena; D002621:Chemistry; D003267:Contraception; D003710:Demography; D019049:Developed Countries; D003933:Diagnosis; D004412:Dysmenorrhea; D005060:Europe; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005298:Fertility; D006470:Hemorrhage; D006801:Humans; D007434:Intrauterine Devices; D007435:Intrauterine Devices, Copper; D008796:Metrorrhagia; D009757:Nylons; D010146:Pain; D000292:Pelvic Inflammatory Disease; D011108:Polymers; D011153:Population; D011157:Population Dynamics; D018873:Pregnancy Rate; D012106:Research; D015022:Yugoslavia
chemical_list: D009757:Nylons; D011108:Polymers
keywords: Adnexitis; Bleeding; Comparative Studies; Contraception; Contraception Termination; Contraceptive Effectiveness; Contraceptive Methods; Contraceptive Methods--complications; Demographic Factors; Developed Countries; Dysmenorrhea; Europe; Examinations And Diagnoses; Family Planning; Fertility; Fertility Measurements; Ingredients And Chemicals; Iud Material; Iud, Copper Releasing; Iud--complications; Metrorrhagia; Nylon; Pain; Polymers; Population; Population Dynamics; Pregnancy Rate; Research Methodology; Size; Southern Europe; Studies; Use-effectiveness; Yugoslavia