FACTORS THAT MAINTAIN POSTPARTUM ANOVULATION

哺乳行为与月份特异率相关的假说 月经周期恢复的沿着试验 假设产后闭经的长度可能受到以下因素的影响： 诸如母亲体重/身高比、肥胖、年龄、产次， 种族、教育水平或社会经济地位。 该项目 从母乳喂养的健康益处这一大背景来看， 为婴儿及其母亲，以及任何社区和家庭福利 这可能是由哺乳引起的产后不孕引起的。 将应用时间依赖性协变量的比例风险模型 从120名母乳喂养妇女和一名 对照组为30名母乳喂养的母亲。 时间序列哺乳数据将 由研究对象借助微处理器控制的 电子记录装置，作为 本申请所定义的项目范围。 月经史数据 将由受试者记录，这些，以及电子数据， 将在每月实地采访时收集。 所研究的人口基数是东北新四县地区 墨西哥32,546人 该地区的民族构成为80.9% 西班牙裔，18.7%的盎格鲁人和0.4%的美洲印第安人和其他。 中位数 这四个县的家庭收入都在11000美元以下。

The hypotheses that suckling behavior is related to the month-specific rate of menstrual cycle recovery will be tested along with alternative hypotheses that the length of postpartum amenorrhea may be influenced by such factors as maternal weight/height ratio, fatness, age, parity, ethnicity, educational level or socio-economic standing. The project is viewed within the larger context of the health benefits of breastfeeding for infants and their mothers, as well as any community and family benefits which may result from suckling-induced postpartum infecundity. A proportional hazards model for time-dependent covariates will be applied to the data collected from a population of 120 breast-feeding women and a control group of 30 bottle feeding mothers. Time-series suckling data will be recorded by study subjects with the aid of a microprocessor-controlled electronic recording device to be developed and fabricated as part of the scope of the project defined by this application. Menstrual history data will be recorded by the subjects and these, as well as electronic data, will be collected during monthly field interviews. The population base under study is a four-county area of North-eastern New Mexico of 32,546 people. The ethnic composition of the region is 80.9% Hispanic, 18.7% Anglo and 0.4% American Indian and other. The median family income of these four counties is under $11,000.