de Souza e Silva R
Departamento de Medicina Preventiva da Universidade Federal de São Paulo, Brasil.
Rev Saude Publica. 1998 Feb;32(1):7-17. doi: 10.1590/s0034-89101998000100002.
To assess the behavior of induced abortion as a function of certain demographic variables, for the population of fertile women (15 to 49 years old) residing in the Vila Madalena subdistrict S. Paulo (Brazil).
Two population samples were selected. One sample, with 996 women, investigated the incidence of induced abortions during 1987, using the RRT. In the other, involving 1,004 women, the same information was detected through a conventional approach. In both samples, the induced abortion occurring during the reproductive life was recorded in direct fashion. Though this analysis refers only to information about past abortions, that is by 2,000 women-, it should be noted that it is exactly the RRT that lends credibility to the found or results given results.
The analysis furnishes evidence showing that single women, young women between the ages of 15 and 19, women who have not had live births, women who have a number of children below the expected ideal, women who use contraceptive methods (especially inefficient ones) and women who do not have any restrictions as to abortion constitute the categories most inclined to resort to induced abortion. This grouping suggests the existence of interrelationships between categories, that is, each of these categories is probably composed primarily of the same women, those who are at the beginning of their reproductive lives.
针对居住在巴西圣保罗市马达莱纳区的育龄妇女（15至49岁）群体，评估人工流产行为与某些人口统计学变量之间的关系。
选取了两个样本群体。一个样本包含996名妇女，采用回顾性风险评估法（RRT）调查了1987年期间的人工流产发生率。另一个样本有1,004名妇女，通过传统方法获取相同信息。在两个样本中，均直接记录了生殖期内发生的人工流产情况。尽管此分析仅涉及过去人工流产的信息，即2000名妇女的信息，但应注意正是回顾性风险评估法赋予了所发现结果或给出结果以可信度。
分析提供的证据表明，单身女性、15至19岁的年轻女性、未生育过的女性、子女数量低于预期理想数量的女性、使用避孕方法（尤其是低效方法）的女性以及对人工流产没有任何限制的女性，是最倾向于选择人工流产的类别。这种分组表明各类别之间存在相互关系，也就是说，这些类别中的每一类可能主要由相同的女性组成，即那些处于生殖生活初期的女性。
