A new study done at the Norwegian University of Science and Technology (NTNU) looked at comparisons between women who became pregnant as a result of assisted reproductive technology vs. women who became pregnant without any infertility treatment.
This huge study looked at the births of "more than 1.2 million Norwegian women whose births were listed in the Medical Birth Registry of Norway between 1984 and 2006. Of these, 8229 were pregnancies that resulted from assisted reproduction technology. "
The researchers looked at breech births and survival rates. They reported "no difference between infants of women who had conceived spontaneously and after assisted fertilization in birth weight, gestational age, risks of being small for gestational age, and preterm delivery."
Dr. Liv Bente Romundstad, one of the researchers described the data relating to breech births. She said that "five percent of the children from assisted reproduction are born in a breech presentation, compared with three percent of the average." In the article she goes on to explain the reason for these statistics. She reports women who have babies through assisted reproduction, "are in fact slightly older than average, tend to have shorter pregnancies, and fewer previous births."
Dr. Romunstad also notes that in 1984 women undergoing ART were watched much more closely than women who became pregnant without any medical intervention. Because of this doctors tended to do more Caesarean sections on these women. Now that the technology is better and many more women undergo infertility treatment the number of Caesarean procedures is comparable in both groups.
The study also looked at survival rates between the two populations. According to Dr. Romunstad, "Beginning in 1984, records were also kept for "test tube" babies. " The records showed no differences in terms of survival rates between babies conceived with or without ART.
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