Natality Detail File, 2008 [United States]

This collection provides information on live births in the United States during the calendar year 2008. The natality data in these files are a component of the vital statistics collection effort maintained by the federal government. Birth data is limited to births occurring in the United States to United States residents and nonresidents. Births occurring to United States citizens outside of the United States are not included in this data collection.
Dataset 1 contains data on births occurring within the United States, while Dataset 2 contains data on births occurring in the United States territories of Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands. Variables describe the place of delivery, who was in attendance, and medical and health data such as method of delivery, prenatal care, tobacco and alcohol use during pregnancy, pregnancy history, medical risk factors, and infant health characteristics.
Birth and fertility rates and other statistics related to this study can be found in the User Guide, under Detailed Technical Notes.
Demographic variables include the child's sex, and month and year of birth, and the parents' ages, races, ethnicities, education levels, as well as the mother's marital status and residency status.

本数据集收录了2008日历年美国境内的活产婴儿相关信息。本文件所包含的出生统计数据，是联邦政府牵头维护的生命统计归集工作的组成部分。本次出生数据仅覆盖发生于美国境内、涉及美国居民与非居民的分娩事件。美国公民在美国境外分娩所产下的婴儿，未被纳入本次数据征集范围。
数据集1收录美国本土境内的分娩数据，数据集2则涵盖美国海外领地波多黎各、美属维尔京群岛、关岛、美属萨摩亚及北马里亚纳群岛联邦内的分娩数据。数据变量涵盖分娩地点、接生人员情况，以及分娩方式、产前保健、孕期烟酒摄入情况、妊娠史、医疗风险因素、婴儿健康特征等医学与健康相关指标。
本次研究相关的出生率、生育率及其他统计数据，可查阅用户指南中的「详细技术说明」章节。
人口统计变量则包括婴儿性别、出生月份与年份，父母的年龄、种族、族裔、受教育程度，以及母亲的婚姻状况与居留状态。