AGE AT MENARCHE, FECUNDABILITY, AND MATERNAL STATURE

本项目的目标是：1）确定年龄对 月经初潮对青春期次生殖能力和随后的生育间隔的影响， 2)评估初潮和第一胎年龄对 完成青少年生长和成年身高和体重，以及3） 确定第一胎年龄和间隔时间的影响 在孟加拉国农村，月经初潮和第一胎之间的婴儿死亡率。 具体来说，本项目将研究月经初潮与 年龄和从结婚到第一个孩子的等待时间。 在 此外，月经初潮年龄和月经周期长短之间的关系 将对以后的生育间隔进行检查。 的独立影响 初潮年龄和初潮与第一胎之间的间隔 成人身高和体重也将被评估。 纵向数据集 来自孟加拉国的Matlab，超过1,000名女性在13年的时间里 这些年提供了一个独特的机会来研究这些关系。数据 包括1）预期观察初潮、结婚和生育年龄 在两次调查和登记记录中; 2）身高和体重 在18个月的调查中收集，每月收集测量结果 1989年进行了一次调查。 结果将有助于理解初潮作为一个标志， 生育能力和早育对健康的影响 发展中国家 调查结果将促进知情的政策， 旨在预防和管理青少年生育的方案 在发展中国家，通过更好地了解 早育对孕产妇和儿童健康的影响 营养不良的人口。

The objective of this project are 1) to determine the effect of age at menarche on adolescent subfecundability and on subsequent birth intervals, 2) to assess the effect of age at menarche and first birth on the completion of adolescent growth and adult height and weight, and 3) to determine the effect of age at first birth and the length of the interval between menarche and first birth on infant mortality in rural Bangladesh. Specifically, this project will examine the association between menarcheal age and the waiting time to conception from marriage to first birth. In addition, the association between menarcheal age and the length of subsequent birth intervals will be examined. The independent effects of both age at menarche and the interval between menarche and first birth on adult height and weight will also be assessed. A longitudinal data set from Matlab, Bangladesh for over 1,000 women followed over a period of 13 years provides a unique opportunity to study these relationships. Data include 1) ages at menarche, marriage and childbirth observed prospectively in two surveys and in registration records; and 2) height and weight collected in an 18 month survey where measurements were collected monthly and a single round survey in 1989. Results will contribute to the understanding of menarche as a marker of reproductive capacity, and the health effects of early childbearing in developing countries. Findings will stimulate informed policies and programs aimed at the prevention and management of adolescent childbearing in developing countries, through a better understanding of the effects of early childbearing on maternal and child health in a chronically malnourished population.