Friede A, Hogue C J, Doyle L L, Hammerslough C R, Sniezek J E, Arrighi H
Am J Public Health. 1986 Oct;76(10):1221-4. doi: 10.2105/ajph.76.10.1221.
In 1983, 89,000 children were born to United States women aged less than or equal to 16. To reduce teenage fertility rates, public health workers will need to identify teenagers at elevated risk for childbearing. We tested the hypothesis that the sisters of childbearing teenagers may form such a group. We performed an historical cohort study of 3,767 teenagers aged 12-16 years who were enrolled in Arkansas Aid to Families with Dependent Children (AFDC), 1978-81; they had 247 pregnancies. Multivariable log-linear hazard models were used to control and study age, race, number of AFDC-eligibles per household, and county urbanization and family planning services. Teenagers whose sisters bore children had elevated rate ratios (RR) for childbearing (RR = 1.8; 95% Confidence Limits [CL] = 1.2-2.6), as did Blacks (RR = 3.1; 95% CL = 2.0-4.8), and members of households with more than nine AFDC-eligibles (RR = 1.7; 95% CL = 1.1-2.6). Because they may have elevated childbearing rates, and would be easy to contact, the sisters of pregnant teenagers could form an important target population for family planning efforts.
1983年，美国16岁及以下的女性生育了89,000名儿童。为降低青少年生育率，公共卫生工作者需要识别出有较高生育风险的青少年。我们检验了一个假设，即生育青少年的姐妹可能构成这样一个群体。我们对1978年至1981年参加阿肯色州抚养儿童家庭援助计划（AFDC）的3767名12至16岁青少年进行了一项历史性队列研究；他们有247次怀孕。使用多变量对数线性风险模型来控制和研究年龄、种族、每户符合AFDC资格的人数、县城市化程度和计划生育服务。姐妹生育过孩子的青少年生育的比率比（RR）较高（RR = 1.8；95%置信区间[CL] = 1.2 - 2.6），黑人青少年也是如此（RR = 3.1；95% CL = 2.0 - 4.8），以及每户有超过9名符合AFDC资格成员的家庭中的青少年（RR = 1.7；95% CL = 1.1 - 2.6）。由于她们可能有较高的生育率，并且易于联系，怀孕青少年的姐妹可能成为计划生育工作的一个重要目标人群。
