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Abstract
Performance of the Slimline and Standard models of the Gyne T 380 were measured through
four years in a comparative study initially involving 996 women, seventy percent of
whom were randomized to the Slimline device. Cumulative pregnancy rates of Slim-line
users were 0.3 ± 0.2 per 100 both at three and at four years, as compared with rates
of1.5 ± 0.9 and 3.8 ± 1.7 at the same intervals for users of the Standard model (P > .05). The four-year explusion rate of the Slimline, 8.6 ± 1.3 per 100, was significantly
higher than the comparable rate of the Standard model, 4.4 ± 1.6 (P < .05). The two Gnye T∗ models did not differ in continuation rates. First time IUD users, however, had substantially
lower continuation rates than did former users (P < .001), in consequence of their relative youth and desire to have additional children.
Other performance measures did not differ importantly by device.
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Article info
Publication history
Accepted:
November 17,
1992
Received:
October 14,
1992
Footnotes
☆The Gyne T∗ 380 Slimline and Gyne T∗ 380 Intrauterine Copper Contraceptive are the registered trademarks of Ortho Pharmaceutical (Canada) Ltd.
Identification
Copyright
© 1992 Published by Elsevier Inc.
