More Than a Third of U.S. Babies Unintended
More than one-third of births in the U.S. are the result
of an unplanned pregnancy, according to a CDC study.
Despite a decrease in unplanned pregnancies among white
women, researchers say the number of unintended births has remained steady at
about 37% of all births since 1982.
"The growing proportion of births to unmarried
women, most of which were unintended, has kept the overall proportion of
unintended births approximately constant," write researcher William
Mosher, PhD, of the National Center for Health Statistics at the CDC, and
colleagues.
The study is published in the National Health Statistics
Reports. It shows that unmarried women accounted for 41% of all births in 2009,
up from 18% in 1980.
Researchers say major differences also persist in the
number of unplanned pregnancies according to:
- age
- race
- income
- education
"Unintended births occur disproportionately among
non-Hispanic black women, unmarried women, and women with less income and
education," they write. "For example, the proportion of all births
that were unwanted or mistimed by two years or more was 7% for college
graduates compared with 35% for women who did not complete high school."
The study shows that never-married women and Hispanic
women now account for a growing number of births.
Researchers say the percentage of births that were
intended among white women who had ever been married has increased during
recent years. But these women now represent a much smaller share of overall
births. In 1981, they accounted for 66% of all births. But in 2006-2010, this
number decreased to 43%.
The study also showed that 60% of women who experienced
an unplanned pregnancy in 1998-2002 were not using contraception.
More than a third of those who did not use contraception
(36%) said they did not think they could get pregnant.
"Underestimating the risk of pregnancy is the most
common reason for not using contraception that leads to unintended
pregnancy," the researchers write. "There was no significant
variation in the percentage of women who gave this reason by age, marital
status, or income. However, Hispanic women were more likely than others to say
they did not think they could get pregnant (49%, compared with 35% of white
women and 25% of black women)."
Researchers say the most recent unplanned pregnancy
statistics from 2006-2010 highlight persistent differences according to the
mother's age, ethnicity, and marital status.
During this period:
- Nearly 4 out of 5 teen births were the result of an unplanned pregnancy.
- Half of births to women aged 20-24 were intended, compared with 75% of births among women aged 25-44.
- About 77% of births to women who were married at the time of birth were intended, compared with 49% of births to women who were living with their partner and 33% of births among single women.
- More than two-thirds of births to white women were intended, compared with 57% among Hispanic women and 47% among African-American women.
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