contraceptive measure
contraceptive measure-
53.57 % undergraduates adopted a contraceptive measure during the first sexual experience . The proportion of adopting contraceptive measures each time is 30.71 % . 32.67 % of the students who have had sex appeared accidental pregnancy .
53.57%的本科生第一次性行为时采取了避孕措施，每次性行为均采取避孕措施的比例为30.71%，在有过性行为的学生中32.67%出现过意外妊娠。
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The proportion of IUD as a contraceptive measure was highest among less than 34-year-old women , and it was decreasing with ages increasing , while proportions of tubal ligation and vasectomy were increasing .
在不同年龄组育龄妇女中，34岁以下年龄段的妇女采用宫内节育器作为避孕措施的构成比最高，以后随着年龄的增长其构成比逐渐降低而输卵管结扎和输精管结扎的构成比逐渐增高；
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