Martin Joyce A, Hamilton Brady E, Osterman Michelle J K, Driscoll Anne K, Drake Patrick
Natl Vital Stat Rep. 2018 Nov;67(8):1-50.
Objectives-This report presents 2017 data on U.S. births according to a wide variety of characteristics. Trends in fertility patterns and maternal and infant characteristics are described and interpreted. Methods-Descriptive tabulations of data reported on the birth certificates of the 3.86 million births that occurred in 2017 are presented. Data are presented for maternal age, livebirth order, race and Hispanic origin, marital status, tobacco use, prenatal care, source of payment for the delivery, method of delivery, gestational age, birthweight, and plurality. Selected data by mother's state of residence and birth rates by age also are shown. Trend data for 2010 to 2017 are presented for selected items. Trend data by race and Hispanic origin are shown for 2016 and 2017. Results- A total of 3,855,500 births were registered in the United States in 2017, down 2% from 2016. Compared with rates in 2016, the general fertility rate declined to 60.3 births per 1,000 women aged 15-44. The birth rate for females aged 15-19 fell 7% in 2017. Birth rates declined for women in their 20s and 30s but increased for women in their early 40s. The total fertility rate declined to 1,765.5 births per 1,000 women in 2017. Birth rates for both married and unmarried women declined from 2016 to 2017. The percentage of women who began prenatal care in the first trimester of pregnancy rose to 77.3% in 2017; the percentage of all women who smoked during pregnancy declined to 6.9%. The cesarean delivery rate increased to 32.0% following 4 years of declines. Medicaid was the source of payment for 43.0% of all births in 2017, up 1% from 2016. The preterm birth rate rose for the third straight year, as did the rate of low birthweight. Twin and triplet and higher-order multiple birth rates were essentially stable in 2017.
目标——本报告呈现了2017年美国按多种特征分类的出生数据。描述并解读了生育模式以及母婴特征的趋势。方法——呈现了2017年发生的386万例出生的出生证明上所报告数据的描述性表格。数据涵盖产妇年龄、生育顺序、种族和西班牙裔血统、婚姻状况、吸烟情况、产前护理、分娩费用支付来源、分娩方式、孕周、出生体重和多胞胎情况。还展示了按母亲居住州划分的选定数据以及按年龄划分的出生率。呈现了2010年至2017年选定项目的趋势数据。展示了2016年和2017年按种族和西班牙裔血统划分的趋势数据。结果——2017年美国共登记了3855500例出生，比2016年下降了2%。与2016年的比率相比，总生育率降至每1000名15 - 44岁女性60.3例出生。2017年15 - 19岁女性的出生率下降了7%。20多岁和30多岁女性的出生率下降，但40岁出头女性的出生率上升。2017年总生育率降至每1000名女性1765.5例出生。2016年至2017年，已婚和未婚女性的出生率均下降。2017年怀孕头三个月开始接受产前护理的女性比例升至77.3%；所有怀孕期间吸烟的女性比例降至6.9%。剖宫产率在连续4年下降后升至32.0%。2017年，医疗补助是所有分娩费用支付来源的43.0%，比2016年上升了1%。早产率连续第三年上升，低体重儿出生率也上升。2017年双胞胎、三胞胎及更高阶多胞胎的出生率基本稳定。
