2021年，美国的堕胎率增加了5%，这是堕胎手术仍然是宪法权利的最后一年罗诉韦德案根据新的联邦数据。

根据一份年度报告，2021年有625，978例堕胎报告由美国疾病控制和预防中心(CDC)于周三发布。年龄在15至44岁的女性中，堕胎率为每1 000人11.6例。

这比十年前有所下降，当时2012年报告的堕胎数为669，202例，比率为每1，000名妇女13.1例。然而，这比2020年报告的620，327例堕胎有所增加，堕胎率为每1，000名妇女11.1例。

该报告还研究了美国接受堕胎的一些人口统计数据。2021年，20多岁的女性占堕胎总数的一半以上，为57%。

相比之下，15岁以下的青少年和40岁及以上的成年人堕胎比例最低，分别为0.2%和3.6%。

作者还指出，百分比的变化可能表明美国青少年怀孕的持续下降。

“从2012年到2021年，全国出生数据表明，15-19岁青少年的出生率下降了53%，而这份报告中的数据表明，同一年龄组的堕胎率下降了41%，”他们写道。“这些发现突出表明，美国青少年出生率的下降伴随着青少年堕胎率的大幅下降。”

堕胎率也存在明显的种族/民族差异。黑人妇女是最有可能堕胎的群体，比例为41.5%。白人女性是第二大可能性群体，占30.2%，西班牙裔女性是第三大可能性群体，占21.8%。

换句话说，白人妇女的堕胎率最低，为每1 000名妇女6.4例，黑人妇女的堕胎率最高，为每1 000名妇女28.6例。

报告还发现，大多数堕胎的病人已经有了孩子。

当研究堕胎发生在怀孕的哪个阶段时，报告发现绝大多数发生在怀孕13周之前，大约是第二个三个月的开始。

数据显示80.8%发生在妊娠9周或更早，93.5%发生在妊娠13周之前。

此外，53%的早期流产依赖于药物。药物流产是一种非手术形式的流产，通常有人服用两片药来终止妊娠。

专家此前曾表示，很少有堕胎发生在妊娠中期和晚期，数据也显示了这一点。只有5.7%的堕胎发生在妊娠14至20周之间，0.9%发生在妊娠21周或之后。

疾病预防控制中心在报告中没有包括为什么患者在怀孕的不同阶段选择堕胎的数据。

然而，联邦卫生局表示，决定堕胎发生率的原因有很多，包括“获得医疗保健服务和避孕;堕胎提供者和诊所的可用性;州法规，如强制性等待期、父母参与法以及对堕胎提供者和诊所的法律限制;以及经济的变化及其对计划生育决定和避孕药具使用的影响。”

In final year of Roe v. Wade, abortion rates rose 5%: CDC report

Abortion rates increased by 5% in the United States in 2021, the final year the procedure remained a constitutional right underRoe v. Wade, according to new federal data.

In 2021, there were 625,978 abortions reported, according to an annualreportpublished Wednesday by the Centers for Disease Control and Prevention (CDC). This is a rate of 11.6 abortions per 1,000 women between ages 15 and 44.

This is a decrease from a decade earlier when there were 669,202 abortions reported in 2012 with a rate of 13.1 per 1,000 women. However, it is up from the 620,327 abortions reported in 2020 with a rate of 11.1 per 1,000 women.

The report also looked at some demographics of who is receiving abortions in the U.S. In 2021, women in their 20s accounted for more than half of abortions at 57%.

Comparatively, adolescents under age 15 and adults aged 40 and older made up the lowest percentages of abortions at 0.2% and 3.6%, respectively.

The authors also noted the percentage changes may show the continuing decrease in adolescent pregnancies in the United States.

"From 2012 to 2021, national birth data indicate that the birth rate for adolescents aged 15–19 years decreased 53%, and the data in this report indicate that the abortion rate for the same age group decreased 41%," they wrote. "These findings highlight that decreases in adolescent births in the United States have been accompanied by large decreases in adolescent abortions."

There were also significant racial/ethnic disparities in abortion rates. Black women were the most likely group to obtain an abortion at 41.5%. White women were the second most likely group at 30.2% and Hispanic women were the third most likely at 21.8%.

In other terms, white women had the lowest abortion rate at 6.4 abortions per 1,000 women and Black women had the highest abortion rate at 28.6 abortions per 1,000 women.

The report also found that most patients getting an abortion have already had children.

When looking at what stage of pregnancy abortions were occurring in, the report found that an overwhelming majority occurred before 13 weeks' gestation, which is around the beginning of the second trimester.

Data showed 80.8% occurred at 9 weeks' gestation or earlier and 93.5% occurred before 13 weeks' gestation.

Additionally, 53% of those first-trimester abortions relied on medications.Medication abortionsare a non-surgical form of abortion in which someone usually takes two pills to end a pregnancy.

Experts have previously stated that few abortions happen in the second and third trimesters and the data showed just that. Just 5.7% of abortions occurred between 14 and 20 weeks' gestation and 0.9% occurred at or after 21 weeks' gestation.

The CDC did not include data in the report about why patients opt for abortions at various stages of pregnancy.

However, the federal health agency said there are many reasons that determine the incidence of abortions including "access to health care services and contraception; the availability of abortion providers and clinics; state regulations, such as mandatory waiting periods, parental involvement laws, and legal restrictions on abortion providers and clinics; and changes in the economy and the resulting impact on family planning decisions and contraceptive use."