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Second neural tube defects.

Second netural tube defects

At least 1 child in 1,000 born in the United States suffers from a neutral tube defect, such as spina bifida. Mothers who bear one child with such a defect run a 2 to 7 percent recurrence risk in each successive child, depending o n where in the world they live. But the risk is not equal for all neutral tube defects, report Judith G. Hall and her colleagues at the University of British Columbia in Vancouver, where the overall recurrence rate is 2.1 percent. In a four-year study of 701 children, they found a 3.3 percent recurrence risk for women whose initial child's defect occurred above the spine's lumbar section, but a 0.7 percent risk if it occurred below the T12 vertebra.
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Title Annotation:birth defect statistics
Author:Young, Patrick
Publication:Science News
Date:Aug 6, 1988
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