[Comparison of ultrasound plus radiography versus computed tomography in the diagnosis of ectopic intrauterine devices].

Objective: To compare the effectiveness of ultrasound plus radiography versus computed tomography (CT) in the diagnosis of ectopic intrauterine device (IUD) and analyze the ratio of cost and effectiveness (C/E) so as to provide scientific rationales for the selection of appropriate diagnostic methods.

Methods: A total of 70 cases were recruited from two major Chinese hospitals in 2009. They were examined with ultrasound plus radiography and CT respectively.

[The comparison of efficacy of female sterilization by modified Uchida technique and silver clips in China].

Objective: To compare efficacy of female sterilization by modified Uchida technique and silver clips and to evaluate the influence on operation procedure and clinical effect with or without surgery training of service providers.

Methods: A comparative, multicenter clinical trial was performed in 18 county and township-level service centers. Totally 2198 women underwent sterilization from these 18 study center were divided into 1116 women sterilized by modified Uchida technique and 1082 women by silver clips.

Family planning technical services in China.

Family planning is a basic state policy in China. Its aim is to control population growth and to enhance population quality. Technical services are the key measures for implementing the family planning policy.

[Induced abortion in China: problems and interventions].

Pooled literatures showed that the induced abortion in China faces many problems:the number of induced abortion remains large; most cases are young and nulliparity women; the frequency of abortion is high; and the interval between one and another abortion is short. Health promotion strategies should be applied to address these problems. It is important to increase the population's awareness of contraception,especially among nulliparity and migrant populations.

[Efficacy of intrauterine device TCu380A when inserted in four different periods].

Objective: To compare the effectiveness of TCu380A intrauterine device (IUD) inserted in menstrual interval, immediately after vacuum aspiration, and early and later lactation periods.

Methods: A comparative, multicentre clinical trial was performed. Totally 2293 eligible women were inserted TCu380A IUD during the above mentioned 4 different period.

[An epidemiological survey on intrauterine device downward dislocation in Chinese rural users].

Objective: To understand the situation of downward dislocation of intrauterine device (IUD) and the impact related to the effectiveness of HJD use, in China.

Methods: An epidemiological survey with cross-sectional, retrospective and prospective study designs was conducted to investigate 18,922 IUD users who were selected by a multi-phase stratified cluster sampling method.

Results: IUD's downward dislocation had been an important unsuccessful issue related to the IUD insertion that accounted for 20% of total the cases of failure.

Conception probabilities at different days of menstrual cycle in Chinese women.

Objective: To investigate the conception probability among Chinese women.

Design: Prospective observational study.

Setting: Clinics in hospitals and family planning institutes in 10 provinces and cities.

[Study on Meta analysis regarding the acceptability of medical abortion compared with surgical abortion].

Objective: To analyze and evaluate the acceptability of mifepristone compatible with misoprostone versus conventional surgical abortion among women under unwanted early pregnancy, so as to help the unexpected pregnant women to choose the satisfactory abortion, and to provide the evidence for clinicians to make a proper clinical decision.

Methods: Six medical databases were searched, including MEDLINE, EMBASE, Cochrane library, CBMdisc, CNKI and VIP, together with twelve journals hand-searched, and references of included studies additionally searched. Two qualified reviewers reviewed the original articles, evaluating qualities of articles, and extracting data independently.

WHO multinational study of three misoprostol regimens after mifepristone for early medical abortion.

Objectives: To compare the side effect profiles of regimens of oral and vaginal administration of misoprostol after a single oral dose of 200 mg of mifepristone and to investigate patients' perceptions of medical abortion.

Design: Double-blind, randomised controlled trial.

Setting: Fifteen gynaecological clinics in 11 countries.

WHO multinational study of three misoprostol regimens after mifepristone for early medical abortion. I: Efficacy.

Objectives: To compare the efficacy of oral and vaginal administration of misoprostol after a single oral dose of 200 mg of mifepristone and to investigate whether the efficacy can be improved and the duration of bleeding shortened by continuing oral misoprostol for one week.

Design: Double blind, randomised controlled trial.

Setting: Fifteen gynaecological clinics in 11 countries.

[Effects of mifepristone of different doses on emergency contraception, a randomized double-blind study].

Objective: To compare the effects of mifepristone of different doses on emergency contraception.

Methods: 3,052 healthy women with regular menstrual cycle who visited the 10 family planning institutes and hospitals in Beijing, Shanghai, Shangdong, Sichuan, Tianjin, Guangdong, and Liaoning for emergency contraception within the period of 120 hours after a single act of unprotected sex were given a single dose of 10 mg or 25 mg mifepristone randomly and double-blindly. They were asked to record the vaginal hemorrhage that would occur and not to have unprotected sex until the next menstrual onset when they were followed up.

[A multicentre comparative clinical study of uterine cavity shaped device Cu300, TCu220C and TCu380A in ten years].

Objective: To observe the clinical effects of uterine cavity shaped device (UCD) Cu300, TCu220C and TCu380A in ten years.

Methods: Two thousand, six hundred and ninety-nine rural parous women were randomized into three groups. UCD Cu300 group had 899 cases, TCu220C group and TCu380A group each had 900 cases.

Therapeutic effects of the levonorgestrel-releasing intrauterine system in the treatment of idiopathic menorrhagia.

Objective: To investigate the effect of the levonorgestrel-releasing intrauterine system (LNG-IUS) in the treatment of idiopathic menorrhagia.

Design: Measurements of menstrual blood loss (MBL), hemoglobin, and serum ferritin before and after LNG-IUS insertion.

Setting: National Research Institute for Family Planning and Beijing Gynecology and Obstetrics Hospital, Beijing, People's Republic of China.