50岁的郭女士这两年月经量越来越少,尤其是近一年时来时不来,知道自己即将绝经,认为没有必要再避孕了,于是就自行到医院把节育环摘掉了。但没过三个月,她便感到浑身乏力,而且月经也没来。到医院就诊,医生让其做妊娠检测,结果呈阳性。统计资料表明,在各年龄组的人流率中,以40~45岁组最高,其次才是20~24岁组。那些在生育旺盛期都没有出现意外怀孕的人,为 Ms. Guo, 50, had less and less menstrual flow over the past two years, especially when she came over the past year. She knew she was going to menopause and thought there was no need for contraception. So she went to the hospital to remove the IUD. But within three months, she felt tired and had no menstruation. To the hospital, the doctor let her do pregnancy test, the result was positive. Statistics show that among all age groups, the highest among 40-45 years of age, followed by 20-24 years of age. Those who have had unplanned pregnancies during their reproductive periods are