title: A comparison of the copper T-200 and the Lippes Loop in four countries.
abstract: A comparative field trial of the Copper TCu-200 and the Lippes loop was conducted in Colombia, Iran, Korea, and Thailand from 1971 to 1973. The study, involving 7,400 women, provided two-year first segment continuation and termination rates. In three countries, TCu-200 expulsion rates were significantly below Lippes loop expulsion rates. For women with three or fewer living children, TCu-200 expulsion rates were markedly below Lippes loop rates in all four countries. The comparative advantage accruing to the TCu-200 in this characteristic did not extend to the two-year continuation rates.
mesh_terms: D000328:Adult; D003105:Colombia; D005260:Female; D006801:Humans; D007433:Intrauterine Device Expulsion; D007434:Intrauterine Devices; D007492:Iran; D007723:Korea; D010342:Patient Acceptance of Health Care; D013785:Thailand