《新科学家》消息,据美国亚特兰大的疾病控制中心(CDC)的一份新的调查,妇女绝育手术的失败率出乎意料地高:有1/50的手术者之后怀孕,有时甚至手术10年之后还会怀孕。 CDC的调查人员走访了9个城市的在1978年到1986年问做了输卵管结扎手术的10685名妇女,包括对一些手术14年的妇女也做了追踪凋查。 According to a new survey by the New York-based Centers for Disease Control and Prevention (CDC), the failure rate of female sterilization surgery is unexpectedly high: one in 50 surgeries are later pregnant and sometimes 10 years in surgery After that will be pregnant. CDC investigators interviewed 10 685 women in 9 cities who had undergone tubal ligation between 1978 and 1986, including a follow-up survey of some women who had undergone surgery for 14 years.