铜T型宫内节育器排出的危险因素：一项流行病学分析。

Risk factors for copper T IUD expulsion: an epidemiologic analysis.

作者信息

Zhang J, Feldblum P J, Chi I C, Farr M G

机构信息

Family Health International, Research Triangle Park, North Carolina 27709.

出版信息

Contraception. 1992 Nov;46(5):427-33. doi: 10.1016/0010-7824(92)90146-k.

DOI:10.1016/0010-7824(92)90146-k

PMID:1458889

Abstract

Little is known of the factors associated with expulsion of intrauterine devices (IUD). We conducted a nested case-control study to examine the risk factors for copper T IUD expulsion using data from a multicenter international clinical trial. We included 70 cases with expulsion and 1,536 controls, and we examined a variety of characteristics of the IUD wearers. The proportional hazards model showed that young maternal age, abnormal amount of menstrual flow and dysmenorrhea before IUD insertion are risk factors for copper T IUD expulsion. The risk of expulsion steadily increased as age decreased, and as the severity of dysmenorrhea increased.

摘要

关于与宫内节育器（IUD）排出相关的因素，人们了解甚少。我们进行了一项巢式病例对照研究，利用一项多中心国际临床试验的数据来检查铜T型宫内节育器排出的风险因素。我们纳入了70例节育器排出的病例和1536例对照，并研究了宫内节育器佩戴者的各种特征。比例风险模型显示，母亲年龄较小、放置宫内节育器前月经量异常和痛经是铜T型宫内节育器排出的风险因素。随着年龄的降低以及痛经严重程度的增加，节育器排出的风险稳步上升。