Resuscitated Newborns at Risk for Lower IQs

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Dr. John Fiascone, medical director of the Neonatal Intensive Care Unit at Tufts University School of Medicine in Boston, doesn't find the study convincing. "The concept of a continuum of brain damage is intuitively appealing. However, this study is not proof of that concept," he said.

"The biggest weakness with the paper is that about 50 percent of infants eligible for evaluation were, in fact, not evaluated," Fiascone said. "The group differences in IQ are not convincing. For example, the reference group has an average full scale IQ of 105 while the asymptomatic group has 104. Because of the large number of babies, this difference may be statistically significant, but what is the meaning for an individual of a difference of one point in their IQ? Probably nothing at all," he said.

The authors indicated that the rate of a low IQ is 7 percent in the reference group and 10 percent in the asymptomatic group, Fiascone noted. "A 3 percent difference is unimpressive in the setting where 50 percent of eligible infants were not tested," he said.

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More information

For more about encephalopathy, visit the U.S. National Institute of Neurological Disorders and Stroke.

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