Interim 4-year results of a comparative study between the Nova T and the Multiload 250.
Eight-hundred patients recruited between September 1981 and December 1984 were admitted to a randomized prospective trial of the Nova T (NTCu200Ag) and Multiload 250 (MLCu250) IUDs. At the cut off date, 31 December 1986, 206 patients had completed the 4-year trial period, 379 had terminated before completion and 215 were in the fourth year of use. For the third and fourth years, the MLCu250 had a significantly lower accidental pregnancy rate (p less than 0.05).
McCarthy
T
T
Department of Obstetrics and Gynaecology, National University of Singapore, National University Hospital.
Ramachandran
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L
Ratnam
S S
SS
D002681:China / Q000208:ethnology; D005260:Female; D006801:Humans; D007435:Intrauterine Devices, Copper / Q000009:adverse effects*; D008296:Malaysia / Q000208:ethnology; D011247:Pregnancy; D012846:Singapore