ATLANTA -- More American women are having babies they didn't want, a survey indicates, but federal researchers say they don't know if that means attitudes about abortion are changing.

U.S. women of childbearing age who were surveyed in 2002 revealed that 14 percent of their recent births were unwanted at the time of conception, federal researchers said yesterday.

In a similar 1995 survey, only 9 percent were unwanted at the time of conception.

At least one anti-abortion group said the numbers reflect a national "pro-life shift," while others who research reproductive health issues suggested it might mean less access to abortion.

The latest findings are consistent with the falling rate of abortions, according to the Guttmacher Institute, a New York-based nonprofit group that researches reproductive health issues.

In 1995, for every 100 pregnancies that ended in abortion or a birth, almost 26 ended in abortion. In 2002, 24 ended in abortion, according to Guttmacher data.

That information seems to be in sync with the federal data released yesterday, said Lawrence Finer, Guttmacher's associate director for domestic research.

"The two statistics together suggest -- but don't confirm -- that a greater percentage of unintended pregnancies resulted in births rather than abortions," Mr. Finer said.

The Guttmacher Institute is nearly finished with a study of that question, but Mr. Finer declined to discuss the results before they've been published.

"I don't think there's any mystery here," said Susan Wills, of the U.S. Conference of Catholic Bishops.

The new data underscores that more women are turning away from abortions, even when it's a pregnancy they don't want, said Ms. Wills, associate director for education in the Conference's Secretariat for Pro-Life Activities.

"It shows a real pro-life shift," she said.

More women may be carrying pregnancies to term because of increasing availability of ultrasounds and other information that show "it's a baby from an early time," Ms. Wills said.