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美国女性的怀孕率持续下降。

Pregnancy rates for U.S. women continue to drop.

作者信息

Curtin Sally C, Abma Joyce C, Ventura Stephanie J, Henshaw Stanley K

机构信息

Centers for Disease Control and Prevention National Center for Health Statistics 3311 Toledo Road, Hyattsville, Maryland 20782, USA.

出版信息

NCHS Data Brief. 2013 Dec(136):1-8.

Abstract

The pregnancy rate for U.S. women in 2009 was 102.1 per 1,000 women aged 15-44, the lowest level in 12 years; only the 1997 rate of 101.6 has been lower in the last 30 years. Rates for women under age 30 fell during 1990-2009, while rates for women aged 30 and over increased. Rates for teenagers reached historic lows in 2009, including rates for the three major race and Hispanic origin groups. Pregnancy rates have declined about 10% each for married and unmarried women since 1990. The birth rate for married women was 72% higher than the rate for unmarried women; the abortion rate for unmarried women was almost five times higher than the rate for married women. Pregnancy rates for women in the United States continued to decline in 2009, reaching the lowest level in 12 years (102.1 per 1,000 women aged 15-44). This level is 12% below the 1990 peak (115.8). The estimated number of pregnancies dropped to 6,369,000 (4,131,000 live births, 1,152,000 induced abortions, and 1,087,000 fetal losses). The drop in birth rates since 2007 has been well documented. However, it is important to examine the other outcomes of pregnancy to understand the full scope of current reproductive trends. The data in this report provide a comprehensive picture of pregnancies and pregnancy outcomes. Data on pregnancy outcomes by age, race and Hispanic origin, and marital status are presented using data from the National Vital Statistics System, the Abortion Surveillance System and Guttmacher Institute, and the National Survey of Family Growth (NSFG).

摘要

2009年,美国15至44岁女性的怀孕率为每1000名女性中有102.1例,是12年来的最低水平;在过去30年中,只有1997年的101.6这一比率更低。1990年至2009年期间,30岁以下女性的怀孕率下降,而30岁及以上女性的怀孕率上升。2009年,青少年怀孕率达到历史最低点,包括三个主要种族和西班牙裔群体的怀孕率。自1990年以来,已婚和未婚女性的怀孕率均下降了约10%。已婚女性的生育率比未婚女性高72%;未婚女性的堕胎率几乎是已婚女性的五倍。2009年,美国女性的怀孕率继续下降,达到12年来的最低水平(每1000名15至44岁女性中有102.1例)。这一水平比1990年的峰值(115.8)低12%。估计怀孕数降至636.9万例(413.1万例活产、115.2万例人工流产和108.7万例胎儿死亡)。自2007年以来出生率的下降已有充分记录。然而,重要的是要研究怀孕的其他结果,以全面了解当前的生殖趋势。本报告中的数据提供了怀孕及怀孕结果的全面情况。按年龄、种族和西班牙裔血统以及婚姻状况划分的怀孕结果数据,是使用来自国家生命统计系统、堕胎监测系统和古特马赫研究所以及全国家庭成长调查(NSFG)的数据呈现的。

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