Jones R W, Parker A, Elstein M
Br Med J. 1973 Jul 21;3(5872):143-5. doi: 10.1136/bmj.3.5872.143.
Preliminary acceptability and reliability tests of the Dalkon Shield were done in 377 women over 17 months, amounting to 3,028 months of use. There was a 98% follow-up. The pregnancy rate of 4.7 and expulsion rate of 6.3 do not meet the claims described in initial trials by the developers of the device. Nevertheless, the Dalkon Shield seems to be an advance in intrauterine contraception since it has the advantages of a lower expulsion rate than the "first generation" inert intrauterine devices.
在17个月内对377名女性进行了Dalkon Shield宫内节育器的初步可接受性和可靠性测试，累计使用时长达到3028个月。随访率为98%。其4.7%的妊娠率和6.3%的脱落率未达到该器械开发者在最初试验中所宣称的标准。然而，Dalkon Shield似乎是宫内避孕领域的一项进步，因为它比“第一代”惰性宫内节育器具有更低的脱落率。
