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Women's Health

Older Moms Among Latest Birth Trends in U.S.

Twins and C-Sections Also on the Rise, Say Researchers
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WebMD Health News

March 7, 2005 -- A new snapshot of U.S. birth trends has just been released. It shows shifts in which women are having babies and how those infants are entering the world.

America's birth and fertility rates both rose by 2% in 2003, says the report. The birth rate reached 14.1 births per 1,000 people, up from 13.9 in 2002. The fertility rate (the number of births per 1,000 women aged 15-44 years) reached 66 births per 1,000 women.

Moms Are Older

It's official: More women are having babies later in life. Most women still have babies in their 20s, but the numbers are shifting a bit. The birth rate rose for women aged 25-44 years and dropped 3% for teens and women in their early to mid-20s.

In fact, the birth rate for women aged 30 to 44 hasn't been this high in 30 years, says the report.

Births rose 4% among women in their early to mid-30s, 6% for women in their late 30s, and 5% for women in their early to mid-40s. That brings their rates to about 95, 44, and 9 births per 1,000 people, respectively.

Meanwhile, teenage births dropped, as they have for more than a decade. Births for women in their mid- to late teens fell 3% since 2002, for a birth rate of about 42 births per 1,000 women.

More unmarried women also gave birth in 2003. The 4% increase brought their birth rate to almost 45 births per 1,000 unmarried women.

Less Smoking, More Prenatal Care

Two healthy trends are still going strong: More women aren't smoking while pregnant and more are getting early prenatal care. Those patterns started about 15 years ago and continued in 2003.

The proportion of pregnant women who smoked dropped to 11%, down 4% from the previous year. Back in 1989, when birth certificates started noting maternal smoking, nearly one in five pregnant women smoked (19.5%).

More pregnant women are also getting prenatal care in their first trimester. The 2003 percentage was 84.1%, up from 83.7% a year earlier.

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