Buston Katie, Williamson Lisa, Hart Graham
MRC Social and Public Health Sciences Unit, University of Glasgow, 4 Lilybank Gardens, Glasgow G12 8RZ, UK.
J Epidemiol Community Health. 2007 Mar;61(3):221-5. doi: 10.1136/jech.2005.044107.
The UK has the highest rate of teenage pregnancies in western Europe. Although there is a large body of literature focusing on predictors of conception among this age group, almost all the work compares those young women who have become pregnant with their peers, regardless of whether or not their peers have experienced sexual intercourse.
To compare 16-year-old young women who have become pregnant with their peers who also have experience of sexual intercourse, but who have not conceived.
Analysis of data from the baseline and follow-up surveys conducted as part of a trial of sex education.
Female school students aged 14-16 years from the East of Scotland.
Young age of self and partner, and non-use of contraception, all at first intercourse, are most strongly associated with pregnancy.
Those who engage in sexual intercourse at a relatively young age will often have had more opportunity to become pregnant than those whose sexual debut comes later. Similarly, the fact that those who use contraception at first intercourse have been less likely to conceive than those who do not could reflect the overall patterns of contraceptive use: young women who have used contraception at each occasion of intercourse will have had less chance to conceive than those who have not. Having a young partner at first intercourse suggests that, if this pattern continues, the couple may lack the resources needed to prevent a pregnancy due to the immaturity of both partners.
在西欧,英国的青少年怀孕率最高。尽管有大量文献关注该年龄组受孕的预测因素,但几乎所有研究都将已怀孕的年轻女性与其同龄人进行比较,而不论其同龄人是否有过性行为。
比较已怀孕的16岁年轻女性与有过性行为但未受孕的同龄人。
对作为性教育试验一部分进行的基线调查和随访调查数据进行分析。
来自苏格兰东部的14 - 16岁女学生。
首次性交时自身及伴侣年龄小且未使用避孕措施,与怀孕的关联最为密切。
与初次性行为较晚的人相比,初次性行为年龄相对较小的人往往有更多机会怀孕。同样,初次性交时使用避孕措施的人比未使用者受孕可能性小这一事实,可能反映了避孕措施使用的总体模式:每次性交时都使用避孕措施的年轻女性受孕机会比未使用者少。初次性交时有年轻伴侣表明,如果这种模式持续下去,由于双方都不成熟,这对伴侣可能缺乏预防怀孕所需的资源。