Roke C M
Family Planning Association, Auckland Branch, New Zealand.
Contraception. 1988 Jun;37(6):555-63. doi: 10.1016/0010-7824(88)90002-9.
This study compares the rates of easy and difficult removals of various types of IUDs. Eight-hundred-sixteen IUDs were removed in Auckland Family Planning Clinics in an 8-month period. Nearly 80% were the standard Multiload Copper 250. Eight-eight percent of all IUDs were easy to remove with another 7% requiring a hard pull. Of the remaining 5%, 3.5% required simple intracervical exploration, 1% required intrauterine exploration and 0.5% were referred to hospital. When compared with the standard Multiload, no IUD was statistically easier and only the Mini-Copper 7 was harder to remove at the 5% level of significance.
本研究比较了各类宫内节育器（IUD）取出的难易程度。在8个月的时间里，奥克兰计划生育诊所取出了816个宫内节育器。近80%是标准的多负载铜250型。所有宫内节育器中，88%取出容易，另有7%需要用力牵拉。其余5%中，3.5%需要简单的宫颈内探查，1%需要子宫内探查，0.5%被转诊至医院。与标准的多负载型相比，在5%的显著性水平上，没有一种宫内节育器在统计学上取出更容易，只有微型铜7型取出更困难。
