University of Colorado, Boulder, USA.
Int Perspect Sex Reprod Health. 2012 Mar;38(1):34-42. doi: 10.1363/3803412.
Although studies have demonstrated change in fertility preferences over time, there is a lack of definitive knowledge about the level and direction of change among individuals, especially young and unmarried women. Furthermore, little is known about the factors associated with changes in fertility preferences over time.
The analysis uses the first five waves of data from a longitudinal study of a random sample of women aged 15-25 in southern Malawi. The data were collected four months apart over an 18-month period, between June 2009 and December 2010. Multinomial logit regression models were used to calculate relative risk ratios and identify associations between four categories of life events-reproductive, relationship, health and economic-and shifts in fertility timing preferences.
In each four-month period, more than half of the women reported changes in the desired timing of their next birth, and delays and accelerations in timing desires were common. Several life events, including having a child, entering a serious relationship and changes in household finances were associated with changes in the level and direction of fertility preference.
Shifts in fertility timing preferences often occur in response to changes in life circumstances. Understanding the reasons for these shifts may aid family planning providers in meeting women's contraceptive needs.
尽管已有研究表明,人们的生育偏好会随时间发生变化,但对于个体,尤其是年轻且未婚女性的生育偏好变化程度和方向,我们仍知之甚少。此外,人们对于导致生育偏好随时间发生变化的因素也知之甚少。
本分析使用了来自马拉维南部一个随机抽取的 15-25 岁女性纵向研究的前五轮数据。这些数据是在 2009 年 6 月至 2010 年 12 月的 18 个月期间,每四个月收集一次,共收集了四轮。使用多项逻辑回归模型计算相对风险比,并确定生殖、关系、健康和经济四类生活事件与生育时间偏好变化之间的关联。
在每四个月的周期中,超过一半的女性报告了下一次生育期望时间的变化,而且生育期望的延迟和加速很常见。一些生活事件,包括生孩子、进入一段认真的关系以及家庭财务状况的变化,与生育偏好的水平和方向的变化有关。
生育时间偏好的转变往往是对生活环境变化的反应。了解这些转变的原因可能有助于计划生育提供者满足妇女的避孕需求。