Two-year comparative trial of the Gyne T* 380 Slimline and Gyne T* 380 intrauterine copper devices.
In a randomized trial of the Gyne T* 380 Slimline, the-two year pregnancy rate was 0.3 per 100 and the continuation rate was 65 per 100. These rates did not differ statistically from those of the standard Gyne T* 380, nor did other performance parameters differ between devices by the log-rank test. Women under age 30 had lower continuation rates using either device than did women age 30 or older at admission because of removals for planned pregnancy. Conception rates among those who desired pregnancy were 35 per 100 at one month and 86 per 100 at one year.
Sivin
I
I
Population Council, Center for Biomedical Research, New York, NY 10021.
Diaz
S
S
Pavez
M
M
Alvarez
F
F
Branche
V
V
Diaz
J
J
Odlind
V
V
Olsson
S E
SE
Stern
J
J
D000328:Adult; D005260:Female; D006801:Humans; D007435:Intrauterine Devices, Copper / Q000009:adverse effects*; D015993:Life Tables; D008137:Longitudinal Studies