Rise in teenage pregnancy rate spurs new debate on arresting it

"Research unmistakably indicates that delaying sexual initiation rates and reducing the total number of lifetime partners is more valuable in protecting the sexual health of young people than simply passing out condoms," said Valerie Huber of the National Abstinence Education Association, who blamed the increase on several factors.

"Contributors include an over-sexualized culture, lack of involved and positive role models, and the dominant message that teen sex is expected and without consequences," Huber said. The Obama administration is launching a $110 million pregnancy prevention initiative focused on programs with proven effectiveness but has left open the possibility of funding some innovative approaches that include encouraging abstinence.

The rate at which U.S. teenagers were having sex rose steadily through the 1970s and 1980s, fueling a sharp rise in teen pregnancies and births. That trend reversed around 1991 because of AIDS, changing social mores about sex and other factors, including greater use of contraceptives, which pushed the U.S. teen pregnancy rate to historic lows.

The U.S. rates still remained higher than those in other industrialized countries.

The decline in teen sexual activity had leveled off starting about nine years ago, and the teen birth rate began to increase in 2005. It wasn't known before if the increase was due to more pregnancies or fewer abortions and miscarriages. For the first time, the new analysis uses those factors in calculating the teen pregnancy rate.

The analysis examined data on teenage sex and births collected by the federal Centers for Disease Control and Prevention's National Center for Health Statistics and data on abortions collected by the CDC and Guttmacher -- the two best sources of such data.

The abortion rate among teenagers rose 1 percent in 2006 from the previous year -- to 19.3 abortions per 1,000 women in that age group, the analysis found. Taking that and miscarriages into account, the analysis showed that the pregnancy rate among U.S. women younger than 20 in 2006 was 71.5 per 1,000 women, a 3 percent increase from the rate of 69.5 in 2005. That translated into 743,000 pregnancies among teenagers, or about 7 percent of women in this age group.

"When birth rates go up and down, it could be the result of kids getting fewer abortions," said John Santelli, a professor of population and family health at Columbia University. "This shows that it's a true rise in pregnancies."

The rate increase was highest for blacks. Among blacks, the rate increased from 122.7 per 1,000 in 2005 to 126.3. For Hispanics the rate rose from 124.9 per 1,000 women to 126.6. Among whites, the rate increased from 43.3 per 1,000 women to 44.0.