分析不同绝育方法其远期效果,1978～1986年间美国许多医院合作对输卵管绝育妇女进行随访分析。 所有妇女在输卵管绝育前检查登记,同意加入本研究,绝育前有一位训练过的护士记录病史,术时、术后、手术过程特点,包括术中术后并发症均详细记录,参与研究者在术后一个月行电话随访,计划随访5年,本组电 Analysis of different methods of sterilization of its long-term effects, many hospitals in the United States from 1978 to 1986, tubal sterilization of women for follow-up analysis. All women checked registration prior to tubal sterilization and agreed to enroll in the study. A trained nurse prior to sterilization recorded history, surgery, postoperative, and procedural characteristics, including intraoperative and postoperative complications, documented in detail. Participants One month after the phone line, follow-up plan for 5 years, the electricity