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1986年11月至1987年12月,我们对来院进行人工流(引)产的2000名妇女的避孕状况及失败原因进行了一次调查,现择其中资料完整的1616例统计报告如下:调查结果(一)调查对象的构成情况(1)年龄构成(百分比):<20岁1.42%,20～24岁
From November 1986 to December 1987, we conducted a survey on the contraceptive status and causes of failure of 2000 women who came to artificial labor centers. The 1616 statistical reports with the complete data set are as follows: Survey Results ( A) The composition of the respondents (1) Age composition (percentage): <1.42% of 20 years old, 20-24 years old