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Interlaboratory variation in the prenatal screening test for neural tube closing defects



Interlaboratory variation in the prenatal screening test for neural tube closing defects



Sozial- und Praventivmedizin 29(4-5): 207-208



Early detection of neural-tude defects is possible by determining Alpha-fetoprotein (AFP) in maternal serum. 16'685 pregnant women were observed. Three methods for the determination of the "normal" range are compared. The first one, already used in similar studies, makes use of a constant multiple of the median. The other two ones make use of robust estimates of location and scale. Their comparison shows the interest of the robust methods to reduce the interlaboratory variability.

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Accession: 043437365

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PMID: 6207680


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