Center for Research and Teaching in Economics (CIDE), Public Administration Division, Mexico City, Mexico.
Independent Consultant, Mexico City, Mexico.
J Pediatr Adolesc Gynecol. 2021 Aug;34(4):552-557. doi: 10.1016/j.jpag.2021.01.007. Epub 2021 Jan 21.
To identify factors associated with having an abortion (spontaneous or induced) at the time of first pregnancy, and to test the association between abortion in the first pregnancy and the number of live births among young women 20-24 years of age.
Cross-sectional study.
We used a nationally representative survey of Mexican women 20-24 years of age with data at time of survey and retrospective measures of exposures in adolescence. We include 1913 women who reported ever having a pregnancy.
Our outcomes were history of abortion (spontaneous or induced) and number of live births by 20-24 years of age. We used multivariable logistic regression models to estimate the association between sociodemographic factors at the time of pregnancy and abortion history, and between abortion history and number of live births.
Among women 20-24 years of age who ever had a pregnancy, 15.5% reported an abortion in the first pregnancy, and 84.4% never had an abortion. Among women who had an abortion in the first pregnancy, 62.3% did not report any live birth by age 20-24 years. Young women living with their parents (adjusted odds ratio [AOR] = 1.87; confidence interval [CI] = 1.16-3.02) or with a partner with a higher educational level (AOR = 4.64; CI = 1.05-20.44) had greater odds of having an abortion in the first pregnancy. Compared with women who never had an abortion, women who reported an abortion in the first pregnancy had lower odds (AOR = 0.02; CI = 0.01-0.03) of having 1 or more children by the age of 20-24 years.
Young women who reported abortion in the first pregnancy had fewer live births at ages 20-24 years compared to women with no history of abortion.
确定与首次妊娠时堕胎（自然流产或人工流产）相关的因素，并检验首次妊娠堕胎与 20-24 岁年轻女性活产数量之间的关联。
横断面研究。
我们使用了一项具有代表性的墨西哥 20-24 岁女性调查，数据来自调查时以及青春期回顾性暴露测量。我们纳入了 1913 名曾有过妊娠经历的女性。
我们的结局是首次妊娠的堕胎史（自然流产或人工流产）和 20-24 岁时的活产数量。我们使用多变量逻辑回归模型来估计妊娠时的社会人口因素与堕胎史之间的关联，以及堕胎史与活产数量之间的关联。
在曾有过妊娠的 20-24 岁女性中，15.5%报告首次妊娠时堕胎，84.4%从未堕胎。在首次妊娠堕胎的女性中，62.3%报告在 20-24 岁时没有任何活产。与与父母同住（调整后的优势比 [AOR] = 1.87；置信区间 [CI] = 1.16-3.02）或与伴侣受教育程度较高（AOR = 4.64；CI = 1.05-20.44）的年轻女性相比，首次妊娠时堕胎的可能性更大。与从未堕胎的女性相比，报告首次妊娠堕胎的女性在 20-24 岁时有 1 个或多个孩子的可能性较低（AOR = 0.02；CI = 0.01-0.03）。
与无堕胎史的女性相比，报告首次妊娠堕胎的年轻女性在 20-24 岁时的活产数量较少。
