论文部分内容阅读
通常把妇女30岁以后初次生育（初产）称之为大龄生育。随着社会生活和人们思想观念的变化，许多国家大龄生育的妇女越来越多。例如，英国1971年35岁以上生育孩子的妇女占生育妇女总人数的4.3％，而1989年这一比例则增至6.8％；在美国，1976年30岁以后生育第一个孩子的妇女占育
The first childbirth (first birth) of a woman after the age of 30 is usually called the older childbearing. With changes in social life and people’s ideas, more and more women are born in many countries. For example, in the United Kingdom, the number of women who gave birth to children over the age of 35 in 1971 accounted for 4.3% of the total number of women of childbearing in the United Kingdom, compared with 6.8% in 1989; in the United States, the number of women who gave birth to the first child after 30 years of age in 1976 accounted for